Which DNO covers Cambridge and South Cambridgeshire?

UK Power Networks is the Distribution Network Operator (DNO) for Cambridge, South Cambridgeshire, Ely, St Ives, Huntingdon, and March. If you need to arrange a new supply, upgrade existing capacity, or report a power cut in these areas, contact UK Power Networks. For Peterborough and the far north of the county, National Grid Electricity Distribution (formerly Western Power Distribution) is the DNO. Always confirm which DNO covers your specific postcode before booking a connection service.

Do I need Part P notification for electrical work in Cambridgeshire?

Yes. Part P of the Building Regulations applies across England, including all of Cambridgeshire. Any new circuit, consumer unit replacement, or electrical work in a kitchen, bathroom, or outdoors must either be notified to the local authority building control department or self-certified by a registered competent person. Electricians registered with NICEIC, ELECSA, or NAPIT can self-certify and issue certificates without separate building control notification. A Minor Works Certificate is sufficient for additions to existing circuits that do not create a new circuit.

What electrical work is typically needed on fenland agricultural properties in Cambridgeshire?

Agricultural properties on the Cambridgeshire fens often require three-phase supplies for grain drying, irrigation pumps, cold stores, and workshop equipment. Rural supply distances can be significant, meaning voltage drop calculations under BS 7671 Regulation 525 must be carefully assessed. Cable sizing for long agricultural runs typically uses 25mm² or 35mm² SWA cable rather than standard domestic cable. Temporary site supplies for seasonal workers, external lighting for yards and driveways, and EV charging for farm vehicles are also common requirements.

Are there special requirements for electrical work in Cambridge historic buildings?

Many buildings in central Cambridge are Listed (Grade I or II) or within conservation areas. Listed building consent is required before making any alterations that affect the character of the building, including new surface-mounted conduit or trunking runs, new light fittings visible from outside, or alterations to original fabric. Electricians working in listed buildings should discuss the proposed installation method with the building owner and, where required, submit a listed building consent application to Cambridge City Council's Historic Environment team before starting work.

What EV charging regulations apply to new builds in Cambridgeshire?

From 15 June 2022, Approved Document S of the Building Regulations requires all new residential buildings with associated parking to be provided with EV charge points or cable routes (passive provision). In Cambridgeshire, this applies to all new houses and flats with designated parking spaces. Each new dwelling must have at least one 7kW single-phase EV charge point (or cable route for flats). The electrical installation must comply with BS 7671 and the charge point must meet the relevant product standards. Local planning conditions from South Cambridgeshire District Council and other authorities may impose additional EV charging requirements beyond the minimum.

What is the standard for electrical installations in Silicon Fen tech offices?

Technology companies in the Cambridge Science Park, Granta Park, and surrounding areas typically require high-specification electrical installations including: redundant UPS systems, three-phase distribution with clean earth provisions, raised floor power distribution, emergency lighting to BS 5266, and fire detection to BS 5839. Data centres and server rooms require careful co-ordination between electrical, mechanical, and structural engineers. All commercial installations must be designed to BS 7671, with a full Electrical Installation Certificate issued on completion by a qualified design and installation engineer.

How do I find a registered electrician in Peterborough or the Fens?

Use Elec-Mate to search for NICEIC, ELECSA, or NAPIT-registered electricians covering Peterborough, Wisbech, March, Ramsey, and the surrounding Fenland district. All electricians listed on Elec-Mate carry public liability insurance and are registered with a government-approved Part P competent person scheme. When requesting quotes, specify whether you need domestic, commercial, or agricultural electrical work, as contractor specialisms vary. For emergency fault-finding in Peterborough, National Grid ED's emergency number is 0800 6783 105.

LOCATION GUIDE

Electrician Cambridgeshire — Find Registered Electricians

Registered electricians across Cambridgeshire covering Cambridge, Peterborough, Ely, St Ives, March, Huntingdon, Wisbech, and the Fenland district. All work certified to BS 7671.

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7 min readUpdated 2026-05-18Andrew Moore, Founder of Elec-Mate

Written and reviewed by Andrew Moore, founder of Elec-Mate, against BS 7671:2018+A4:2026, IET Guidance Note 3 and the IET On-Site Guide.

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Key Takeaways

1Cambridgeshire is served by two DNOs: UK Power Networks covers Cambridge, Ely, St Ives, March, and Huntingdon; National Grid Electricity Distribution covers Peterborough and the north of the county.
2The Silicon Fen tech corridor around Cambridge creates high demand for reliable commercial electrical installations, three-phase supplies, and data centre power infrastructure.
3Fenland areas including Wisbech and March often require special consideration for rural longline connections, where voltage regulation and cable sizing calculations must account for extended supply distances.
4New residential developments across Cambridgeshire are subject to Part P Building Regulations and must meet BS 7671:2018+A4:2026 requirements for EV charging provisions under Approved Document S.
5University and college buildings in Cambridge carry significant heritage and Grade-listing considerations, requiring sympathetic wiring methods and prior consent for surface-mounted installations.
6All electrical work on new circuits must be certified under the Part P notification scheme or self-certified by a registered competent person (NICEIC, ELECSA, NAPIT).

01 · Location Guide

Areas Covered — Cambridgeshire Electricians

Cambridgeshire is a large and varied county stretching from the outskirts of north London to the edge of the Lincolnshire Fens. Registered electricians on Elec-Mate cover the full county, including:

Cambridge — city centre, Addenbrooke's corridor, Hills Road, Chesterton, Cherry Hinton, and surrounding villages
Peterborough — city and surrounding villages including Eye, Werrington, Whittlesey, Yaxley, and Ramsey
Ely & the Fens — Ely, March, Chatteris, Wisbech, Manea, and the wider Fenland district
St Ives & Huntingdon — St Ives, Huntingdon, St Neots, Godmanchester, and the A14 corridor

Whether you need a consumer unit replacement in Cambridge or a three-phase agricultural supply connection near Wisbech, Elec-Mate connects you with qualified, insured local electricians.

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02 · Location Guide

DNO Networks in Cambridgeshire

Understanding which Distribution Network Operator (DNO) covers your area is important when arranging new supply connections, capacity upgrades, or reporting faults on the public network.

UK Power Networks — covers Cambridge, South Cambridgeshire, East Cambridgeshire (Ely), Fenland (March, Wisbech), Huntingdonshire (St Ives, Huntingdon, St Neots). Power cuts: 0800 783 8866.
National Grid Electricity Distribution — covers Peterborough and the northern fringes of the county. Power cuts: 0800 678 3105.

New supply connections and metering upgrades must be arranged directly with the relevant DNO. Your electrician can assist with the application process and prepare the necessary installation documentation.

03 · Location Guide

Specialist Electrical Work in Cambridgeshire

The county's diverse economy creates a wide range of specialist electrical requirements beyond standard domestic rewires and consumer unit replacements.

Silicon Fen technology companies — Cambridge Science Park, Granta Park, and Babraham Research Campus host hundreds of tech and biotech firms requiring three-phase power, UPS installations, clean earth systems, and data centre electrical infrastructure.
University and college buildings — the University of Cambridge and Anglia Ruskin University have extensive legacy electrical infrastructure. Work in Listed and historic buildings requires sympathetic installation methods and, in some cases, listed building consent.
Fenland agricultural electrical — grain drying, cold storage, irrigation pumps, and poultry housing on the fens require three-phase supplies and specialist agricultural wiring in compliance with BS 7671 Section 705.
Rural longline connections — remote fenland properties may experience voltage regulation issues due to extended LV network lengths. Cable sizing must account for voltage drop under BS 7671 Regulation 525.

04 · Location Guide

EV Charging on New Builds

Cambridgeshire is one of the fastest-growing counties for new housing development. From 15 June 2022, Approved Document S of the Building Regulations requires EV charge points or passive provision on all new residential buildings with associated parking. Key requirements include:

New houses: at least one 7kW EV charge point per dwelling with a designated parking space. The circuit must be dedicated and metered separately from the main supply where practical.
New flats: passive provision (cable route and consumer unit capacity reserved) for at least 20% of parking spaces, with at least one active charge point in communal areas where feasible.
Smart charging requirement: all new EV charge points must support smart charging functionality (scheduled charging, demand response) under the Electric Vehicles (Smart Charge Points) Regulations 2021.

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05 · Location Guide

BS 7671 Compliance in Cambridgeshire

All electrical installations in Cambridgeshire must comply with BS 7671:2018+A4:2026 (the 18th Edition Wiring Regulations). Key requirements relevant to Cambridgeshire installations include:

Regulation 411.3.3 — all circuits supplying socket outlets in domestic premises must be protected by 30mA RCD. Modern split-load or fully RCD-protected consumer units are standard for new and replacement installations.
Section 705 — agricultural and horticultural premises have specific requirements for wiring systems, IP ratings, and equipotential bonding. A supplementary equipotential bonding zone must be established in locations accessible to livestock.
Regulation 525 — voltage drop in supply cables must not exceed 3% for lighting or 5% for power under normal conditions. For long fenland cable runs this requires careful calculation and upsizing.

See our EICR observation codes guide for information on common compliance defects found during periodic inspection.

06 · Location Guide

Certification Requirements

Every qualifying electrical installation in Cambridgeshire must be accompanied by the correct certification. Elec-Mate makes it straightforward for electricians to generate compliant certificates on-site.

Electrical Installation Certificate (EIC) — required for all new circuits, consumer unit replacements, and new installations. Must include test results (insulation resistance, continuity, loop impedance, RCD test times).
Minor Works Certificate (MWC) — for additions and alterations to existing circuits (adding a socket, extending a lighting circuit). Does not cover new circuits or consumer unit replacements.
Electrical Installation Condition Report (EICR) — periodic inspection required every 5 years for rented properties and every 10 years (or on change of occupancy) for owner-occupied homes.

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Cambridgeshire Electrician — Frequently Asked Questions

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Key Takeaways

Areas Covered — Cambridgeshire Electricians

Get the BS 7671 A4:2026 Cheat Sheet — free

DNO Networks in Cambridgeshire

Specialist Electrical Work in Cambridgeshire

EV Charging on New Builds

EV Charging Certificates on Elec-Mate

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BS 7671 Compliance in Cambridgeshire

Certification Requirements

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Cambridgeshire Electrician — Frequently Asked Questions

Which DNO covers Cambridge and South Cambridgeshire?

Do I need Part P notification for electrical work in Cambridgeshire?

What electrical work is typically needed on fenland agricultural properties in Cambridgeshire?

Are there special requirements for electrical work in Cambridge historic buildings?

What EV charging regulations apply to new builds in Cambridgeshire?

What is the standard for electrical installations in Silicon Fen tech offices?

How do I find a registered electrician in Peterborough or the Fens?

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