Terms and Conditions of Business
Last updated: 04 August 2026
These Terms and Conditions apply to all services supplied by Delta Energy Group Ltd unless otherwise agreed in writing.
1. Definitions
In these Terms:
“Delta”, “we”, “us” or “our” means Delta Energy Group Ltd.
“Client”, “you” or “your” means the person, company or organisation purchasing services from Delta.
“Services” means any services supplied by Delta, including contractor supply, contract management, project support, substation support, distribution and transmission support, design and commissioning coordination, civils support, cable installation support, consultancy, technical support and associated services.
“Contract” means the agreement between Delta and the Client for the supply of Services.
“Project” means the works, services, site, contract or engagement to which the Services relate.
“Site” means any location where Services are performed.
“Contractor” means any contractor, subcontractor, consultant, engineer, specialist, supplier or operative engaged or introduced by Delta.
“Working Day” means any day other than a Saturday, Sunday or public holiday in England.
2. Basis of Contract
2.1 These Terms apply to all Services supplied by Delta unless a separate written contract is agreed and signed by Delta.
2.2 Any quotation, proposal, day rate, scope of works or written instruction issued by Delta will form part of the Contract.
2.3 If there is any conflict between these Terms and a project-specific written agreement, the project-specific written agreement will take priority only to the extent of the conflict.
2.4 No variation to these Terms will be valid unless agreed in writing by Delta.
2.5 The Client is responsible for ensuring that all instructions, information, designs, drawings, specifications, access arrangements and project requirements provided to Delta are accurate, complete and suitable.
3. Scope of Services
3.1 Delta provides specialist support for critical electrical infrastructure environments, including distribution, transmission, substations, network infrastructure, project support, contractor supply, contract management, design and commissioning coordination and civils support.
3.2 The exact Services to be supplied will be set out in Delta’s quotation, proposal, written scope, purchase order acceptance, email confirmation or other agreed project documentation.
3.3 Delta is not responsible for any work, duty, deliverable, design, approval, certification, regulatory obligation or project requirement that is not expressly included in the agreed scope.
3.4 Where the Services involve support, coordination, management, contractor supply, consultancy or technical assistance, Delta does not assume responsibility for the role of designer, principal designer, principal contractor, manufacturer, equipment supplier, network operator, DNO, IDNO, ICP or accredited provider unless expressly agreed in writing.
4. Quotations and Orders
4.1 Quotations are valid for [30] days unless stated otherwise.
4.2 A Contract is formed when the Client accepts Delta’s quotation, instructs Delta to proceed, issues a purchase order, confirms acceptance by email, or allows Delta or its Contractors to begin work.
4.3 Any purchase order or client terms issued by the Client will not apply unless expressly accepted by Delta in writing.
4.4 Delta may adjust quotations or rates where the scope changes, additional Services are requested, project information is inaccurate, site conditions differ from those disclosed, or additional time, personnel, equipment, travel, accommodation or specialist support is required.
5. Payment Terms
5.1 Unless otherwise agreed in writing, payment is due within 30 days from the date of Delta’s invoice.
5.2 Delta may agree different payment terms for individual contracts, new clients, urgent works, smaller consultancy engagements or higher-risk projects.
5.3 All sums are exclusive of VAT unless stated otherwise.
5.4 The Client must pay invoices in full without deduction, withholding, set-off or counterclaim unless required by law.
5.5 If the Client disputes an invoice, the Client must notify Delta in writing within 7 days of the invoice date, giving full details of the dispute. Any undisputed amount must still be paid by the due date.
5.6 Delta may suspend Services, withhold deliverables, withdraw Contractors, pause works, or refuse further instructions if payment is late or if Delta reasonably considers that the Client may not pay.
6. Late Payment
6.1 If the Client fails to pay any invoice by the due date, Delta may charge statutory interest on the overdue amount at the applicable rate for late payment of commercial debts.
6.2 Interest will accrue from the date payment becomes overdue until the date payment is received in full.
6.3 Delta may also charge fixed debt-recovery compensation and recover its reasonable costs of collecting overdue sums, including legal fees, collection agency fees, administrative time and other recovery costs.
6.4 Where the parties agree a project-specific late payment administration charge, Delta may apply that charge in addition to any interest and recovery costs, provided it is confirmed in writing.
6.5 Late payment may result in immediate suspension of Services without liability to Delta.
7. Day Rates, Overtime, Weekend Work and Emergency Call-Outs
7.1 Day rates, hourly rates and other charges will be set out in Delta’s quotation, proposal or written agreement.
7.2 Unless otherwise agreed, standard rates apply to work carried out during normal working hours on Working Days.
7.3 Overtime, weekend work, night work, bank holiday work and emergency call-outs may be charged at enhanced rates.
7.4 Where the Client provides more than 5 Working Days’ notice of overtime, weekend work or out-of-hours requirements, Delta may charge such work at 1.5 times the applicable standard rate.
7.5 Where the Client provides 5 Working Days’ notice or less of overtime, weekend work, emergency call-out or out-of-hours requirements, Delta may charge such work at 3 times the applicable standard rate.
7.6 Enhanced rates apply in addition to any travel, accommodation, equipment, mobilisation, demobilisation or other project costs.
8. Travel, Accommodation and Expenses
8.1 The Client is responsible for all reasonable expenses incurred in connection with the Services, including travel, mileage, accommodation, subsistence, parking, tolls, congestion charges, equipment hire, specialist testing equipment and other project-related expenses.
8.2 Where the Site is more than 2.5 hours’ driving time from Delta’s registered office, travel mileage and accommodation costs may be charged to the Client.
8.3 Where work is required within the M25, accommodation and associated location-based costs may be charged at 1.5 times the relevant cost, to reflect higher local pricing and operational costs.
8.4 Equipment hire, specialist testing equipment and similar project-specific costs must be pre-approved by the Client where reasonably practicable.
8.5 Equipment hire and specialist equipment costs will be charged at cost plus a 30% markup unless otherwise agreed in writing.
8.6 Delta may require payment on account for expenses, travel, accommodation, equipment hire or other third-party costs.
9. Client Responsibilities
9.1 The Client must provide all information, access, permissions, drawings, designs, specifications, risk information, safety documentation, site rules, inductions, permits, isolations, outage details and project requirements reasonably required by Delta.
9.2 The Client is responsible for ensuring that the Site is safe, accessible and compliant with applicable laws, regulations, site rules, DNO requirements and project requirements.
9.3 The Client must ensure that all designs, drawings, specifications and instructions provided to Delta are accurate, complete, approved and suitable for the intended purpose.
9.4 The Client is responsible for obtaining all permissions, approvals, outages, isolations, consents, permits, statutory approvals, land access rights and third-party authorisations required for the Project unless expressly agreed otherwise.
9.5 The Client must not require Delta or any Contractor to work in unsafe, unlawful or non-compliant conditions.
10. CDM, Health and Safety and Site Control
10.1 The parties will comply with applicable health and safety laws, including the Construction Design and Management Regulations 2015 where applicable.
10.2 Unless expressly appointed in writing, Delta is not the Principal Contractor, Principal Designer, Client or duty holder responsible for the construction phase under CDM.
10.3 Where a Principal Contractor is appointed for the Site or Project, the Principal Contractor remains responsible for managing and controlling the construction phase in accordance with applicable law.
10.4 Delta and its Contractors will comply with reasonable site rules, inductions, permits, safety procedures and risk controls notified to them.
10.5 Delta may immediately stop, suspend or refuse work where it reasonably believes that the Site, working conditions, information, design, equipment, access, isolation, permit, procedure or instruction is unsafe, non-compliant or unsuitable.
10.6 If work is stopped, delayed or suspended because of unsafe conditions, missing information, non-compliance, lack of access, lack of permits, lack of outage, lack of isolation, DNO requirements, site restrictions or any matter outside Delta’s control, Delta may charge the Client for lost time, standing time, remobilisation, demobilisation, travel, accommodation and associated costs.
10.7 Delta will not be liable for delay, cost, loss or disruption arising from the proper suspension or refusal of work on safety or compliance grounds.
11. Delays, Outages, Weather and Force Majeure
11.1 The Client is responsible for costs arising from delays caused by the Client, the Site, the Principal Contractor, the Principal Designer, DNOs, IDNOs, network operators, third-party contractors, delayed access, cancelled outages, missing permits, late designs, late approvals, weather conditions, ground conditions or other matters outside Delta’s control.
11.2 Where an outage, isolation, possession, access window or third-party attendance is cancelled, postponed or changed, Delta may charge for all booked time, standing time, travel, accommodation, mobilisation, demobilisation and remobilisation costs.
11.3 Neither party will be liable for failure or delay caused by a force majeure event, including severe weather, flood, fire, war, terrorism, pandemic, industrial action, major network incident, government action, or any event beyond reasonable control.
11.4 Where a force majeure event occurs, the parties will discuss in good faith how to minimise disruption, but Delta will not be liable for resulting delay or loss.
12. Quality of Work and Workmanship
12.1 Delta will use reasonable skill and care in supplying the Services.
12.2 Where work is carried out by Contractors, the relevant Contractor is responsible for its own workmanship, acts, omissions, errors, negligence and compliance with applicable requirements.
12.3 Any workmanship warranty, manufacturer warranty, product warranty, equipment warranty or supplier warranty will apply only to the extent provided by the relevant manufacturer, supplier or Contractor.
12.4 Delta does not provide any separate warranty for physical plant, equipment, switchgear, transformer fittings, materials, components or installations unless expressly agreed in writing.
12.5 Delta will not be liable for defects, failures, damage or losses arising from client-supplied equipment, third-party-supplied equipment, manufacturer defects, incorrect design, incorrect specification, poor installation by others, misuse, lack of maintenance, unauthorised alteration, abnormal conditions or events outside Delta’s control.
13. Consultancy, Design and Technical Support
13.1 Where Delta provides consultancy, design-related support, technical coordination, layouts, routing support or commissioning-related coordination, such Services are provided on the basis of information supplied by the Client and relevant project stakeholders.
13.2 The Client is responsible for ensuring that any design, layout, drawing, calculation, approval, adoption, validation or technical submission is reviewed, approved and adopted by the relevant designer, engineer, network operator, DNO, IDNO, client representative or regulatory body where required.
13.3 Once a design, layout, route, drawing, specification or technical proposal has been validated, approved, adopted or accepted by the relevant authority, designer, network operator, DNO, IDNO, client or project stakeholder, Delta will not be liable for subsequent challenges, amendments, rejection, failure or losses arising from that design or approval unless caused directly by Delta’s proven negligence.
13.4 Delta is not liable for any design error, technical error, omission, defect or failure arising from information, drawings, calculations, specifications, instructions or designs provided by the Client, the Client’s designer, a DNO, an IDNO, a network operator or another third party.
14. Third-Party Equipment and Client-Supplied Materials
14.1 Where the Client supplies equipment, materials, switchgear, plant, components or other items, the Client is responsible for ensuring that they are suitable, compliant, properly specified, in good condition and fit for purpose.
14.2 Delta is not liable for inherent defects, failures, delays, incompatibility, non-compliance, poor performance or safety issues arising from client-supplied or third-party-supplied equipment.
14.3 Any delay or additional cost caused by defective, unsuitable, late, unavailable or non-compliant equipment will be charged to the Client.
15. Subcontractors and External Engineers
15.1 Delta may use Contractors, subcontractors, external engineers, consultants, civils teams, specialist suppliers and other third parties to perform or support the Services.
15.2 The Client agrees that Delta may appoint or assign work to vetted Contractors without requiring separate approval for each appointment, unless the Contract expressly states otherwise.
15.3 Delta will take reasonable steps to ensure that Contractors engaged by Delta hold appropriate insurance, qualifications, experience and competence for the work they are asked to undertake.
15.4 Contractors must hold their own public liability, professional indemnity and any other appropriate insurance at levels reasonably required by Delta or the Project.
15.5 Delta may request evidence of Contractor insurance and may refuse to work with Contractors who do not hold appropriate cover.
15.6 Where a Contractor makes an error due to its own act, omission, negligence or poor workmanship, the Contractor will be responsible for that error and Delta may seek recovery from the Contractor.
15.7 Where an error arises because the design, specification, drawing, instruction or project information supplied by the Client or a third party is incorrect, incomplete or unsuitable, the Client or relevant third party will remain responsible.
16. Non-Poaching and Non-Solicitation
16.1 The Client must not, without Delta’s prior written consent, directly or indirectly employ, engage, contract with, solicit, approach or poach any Contractor, engineer, consultant, operative, supplier, employee or representative introduced, supplied or made known to the Client by Delta.
16.2 This restriction applies during the Contract and for 12 months after the later of:
a) completion of the relevant Project;
b) the last date on which the relevant person or company was introduced by Delta; or
c) the last date on which the relevant person or company provided services in connection with the Client.
16.3 If the Client breaches this clause, the Client must pay Delta an introduction fee equal to 25% of the relevant person’s or company’s first 12 months’ gross fees, salary, contract value or projected charges, whichever is highest.
16.4 This clause does not prevent the Client from engaging a person or company where the Client can prove that it had an existing documented relationship with them before Delta’s introduction.
17. Intellectual Property
17.1 All intellectual property rights in Delta’s pre-existing materials, methods, templates, processes, systems, know-how, pricing models, documents, drawings, layouts, frameworks, reports, designs, working papers and other materials remain owned by Delta.
17.2 Any project-specific deliverables, designs, layouts, reports, drawings, cable routings, network layouts, technical documents or other materials created by Delta remain owned by Delta until all invoices relating to the Project have been paid in full.
17.3 On payment in full, the Client receives a non-exclusive, non-transferable licence to use the final deliverables for the specific Project and purpose for which they were supplied.
17.4 The Client must not copy, reproduce, adapt, resell, sublicense, disclose, publish, reuse, reverse engineer or exploit Delta’s materials, designs, layouts, cable routings, methods, documents or deliverables for any other project or purpose without Delta’s prior written consent.
17.5 Delta may reuse general knowledge, experience, methods, principles, templates, know-how and non-confidential learning gained during the supply of the Services.
17.6 Delta may withhold deliverables, drawings, designs, documents, reports, certificates, files and other materials until payment has been received in full.
18. Confidentiality
18.1 Each party must keep confidential any confidential information received from the other party.
18.2 Confidential information includes commercial information, pricing, designs, drawings, technical documents, project information, contractor details, client information, site information, systems, methods, know-how and business information.
18.3 Confidential information may only be used for the purpose of performing or receiving the Services.
18.4 Confidential information may be disclosed where required by law, regulation, court order, insurer, professional adviser, auditor, regulator or competent authority.
19. Liability
19.1 Nothing in these Terms limits or excludes liability for death or personal injury caused by negligence, fraud, fraudulent misrepresentation, or any liability which cannot lawfully be limited or excluded.
19.2 Subject to clause 19.1, Delta’s total liability for any claim or series of connected claims arising from a Contract will be limited to the total fees paid or payable to Delta under that Contract.
19.3 Where a lower liability cap is set out in a quotation, proposal, scope or project-specific agreement, that lower cap will apply unless prohibited by law.
19.4 Delta will not be liable for:
a) loss of profit;
b) loss of revenue;
c) loss of business;
d) loss of contract;
e) loss of opportunity;
f) loss of goodwill;
g) loss of anticipated savings;
h) indirect or consequential loss;
i) third-party claims caused by the Client or others;
j) delays outside Delta’s control;
k) defects in third-party or client-supplied equipment;
l) incorrect or incomplete designs, drawings, specifications or instructions supplied by others;
m) acts or omissions of the Client, Principal Contractor, Principal Designer, network operator, DNO, IDNO, manufacturer, supplier or other third party.
19.5 Each Contractor will remain responsible for its own work, acts, omissions, negligence and insurance-backed liabilities, subject to any applicable cap, contract or insurance limit.
19.6 The Client must take reasonable steps to mitigate any loss, damage, delay or cost.
20. Insurance
20.1 Delta will maintain insurance appropriate to its business and the Services it provides.
20.2 Contractors engaged or introduced by Delta must maintain their own insurance at appropriate levels, including public liability and professional indemnity insurance where applicable.
20.3 The Client may request evidence of insurance where reasonably required for a Project.
20.4 Insurance cover does not increase Delta’s liability beyond the limits set out in these Terms unless expressly agreed in writing.
21. Suspension and Termination
21.1 Delta may suspend or terminate the Services immediately if:
a) the Client fails to pay any invoice when due;
b) the Client breaches these Terms;
c) the Site is unsafe or non-compliant;
d) required information, access, permits, outages or approvals are not provided;
e) the Client becomes insolvent or appears unable to pay its debts;
f) Delta reasonably believes that continuing the Services may expose Delta or its Contractors to unacceptable legal, safety, financial or reputational risk.
21.2 On termination, the Client must immediately pay all sums due, including fees, expenses, costs, work in progress, committed Contractor costs, cancellation costs and demobilisation costs.
21.3 Termination does not affect any rights or obligations that have already accrued.
22. Cancellation and Postponement
22.1 If the Client cancels, postpones, reschedules or reduces booked Services, Delta may charge for time booked, committed Contractor costs, travel, accommodation, equipment hire, administration, mobilisation, demobilisation and lost availability.
22.2 Where cancellation or postponement occurs with 5 Working Days’ notice or less, Delta may charge up to 100% of the booked fees and costs.
22.3 Delta may apply different cancellation terms in a quotation or project-specific agreement.
23. Data Protection
23.1 Each party will comply with applicable data protection laws.
23.2 Delta may process contact, business and project information for the purposes of managing enquiries, supplying Services, administering contracts, issuing invoices, managing Contractors and complying with legal obligations.
23.3 Further information may be set out in Delta’s Privacy Policy.
24. Notices
24.1 Notices under these Terms must be sent by email, post or other agreed written method.
24.2 Notices sent by email will be deemed received on the next Working Day unless the sender receives a delivery failure notification.
25. General
25.1 Neither party may assign the Contract without the other party’s written consent, except that Delta may assign or subcontract its obligations where reasonably necessary to perform the Services.
25.2 If any part of these Terms is found to be invalid or unenforceable, the remaining parts will continue in force.
25.3 A failure or delay in enforcing any right does not waive that right.
25.4 Nothing in these Terms creates a partnership, joint venture, employment relationship or agency relationship between the parties.
25.5 A person who is not a party to the Contract has no right to enforce these Terms.
26. Governing Law and Jurisdiction
26.1 These Terms are governed by the laws of England and Wales.
26.2 The courts of England and Wales will have exclusive jurisdiction over any dispute arising from or connected with these Terms, the Contract or the Services.
27. Company Details
Delta Energy Group Ltd
Company number: 17268856
Registered office: Bowen Suite, The Globe Centre, Accrington, United Kingdom, BB5 0RE
Email: martinparker@deltaenergygroup.co.uk