Annual Maintenance Contracts
Planned Maintenance for HV and LV Systems Across the UK
We offer annual maintenance contracts to keep your high voltage and low voltage electrical systems safe, reliable and fully compliant with UK regulations. Our tailored agreements help reduce risk, control costs and prevent unexpected failures.
Why Choose a Maintenance Contract?
A planned maintenance schedule is essential for any organisation relying on critical electrical infrastructure. Our contracts are designed to suit your system, usage and industry, ensuring every asset is inspected and maintained at the right time.
Anyone who is supplied at high voltage must by law have an appointed (in writing) Authorised Person to look after the equipment on site (Electricity at Work Regulations 1989 and BS 6626). This is defined by HSE as someone who has been trained at high voltage and is competent. With a maintenance contract with Northwick you will comply with BS6626 and, that if your organisations signs up to a maintenance contract that we would provide 24/7 call out facilities in the event of an issue occurring on a site.
Benefits of our maintenance contracts:
- Regular inspection and testing
- Extended equipment lifespan
- Reduced downtime and emergency costs
- Full compliance with statutory requirements
- Priority support and response
We support clients across energy, manufacturing, construction, healthcare, data centres and infrastructure.
What’s Included
Our annual contracts are flexible and built around your needs. From substations to transformers, cabling and switchgear, we cover every key component.
Maintenance services may include:
- HV and LV equipment inspections
- Transformer oil sampling and testing
- Protection system checks and relay testing
- Thermal imaging surveys
- Substation cleaning and condition reporting
- Earth testing and cable terminations
- Load monitoring and capacity assessments
- Street Lighting
Each visit is followed by a clear report with findings, recommendations and any corrective actions required.
Expert Support All Year Round
As part of your contract, you also receive access to technical support, emergency call-out services and asset planning advice. We help you plan budgets, meet audit requirements and manage lifecycle replacements with confidence.
Frequently Asked Questions
How often is maintenance carried out?
Most contracts include quarterly or annual visits, but the frequency can be adjusted depending on your assets and compliance obligations.
Can I customise the contract to fit my site?
Yes. Every contract is tailored to your equipment and operational needs. We will assess your system and create a plan that works for you.
What happens if an issue is found?
If a fault or safety risk is identified, we will provide a clear recommendation and, if approved, carry out remedial works or escalate as needed.
Are reports included with each visit?
Yes. Our team includes SAPs authorised and trained to work within their specific safety procedures and systems