020 8187 1061
London · Cambridge

Quiet, exacting electrical work.

Prospark is a NICEIC-approved electrical contractor working across London and Cambridge. Rewires, consumer units, EICRs, solar PV and battery storage.

CONSUMER UNIT LIGHTING RING FINAL SOLAR PV BATTERY EARTH
Registration NICEIC Approved Assessed and audited annually
Renewables MCS Certified Solar PV and battery storage
Building Regs Part P Competent Person Notifiable work self-certified
Checkatrade 100+ reviews Member since 2019
01 — What we do

From a single faulty circuit to a whole-house rewire.

We work on period properties, apartments and commercial premises across London and Cambridge — often alongside architects, interior designers and main contractors, and often in homes that are lived in while the work is going on. Dust sheets down, cable runs planned around the finish, everything tested and certificated.

Installation & rewiring

First and second fix, carried out to BS 7671 and notified to Building Control where required.

  • Full and partial rewires
  • Consumer units & RCBO upgrades
  • New circuits & distribution
  • Fault finding & repair
  • Kitchen & bathroom installations

Testing & compliance

Reports written to be read — findings explained in plain terms, with remedial work priced separately.

  • EICRs for owners & landlords
  • Landlord certificates
  • Smoke & heat alarm systems
  • EV charge points
02 — How we work

Four steps, and you know where you stand at each one.

STEP 01

Site visit or video call

For anything beyond a small repair we can arrange a site visit to take a look — or a video call, if that suits you better.

STEP 02

Written estimate

An itemised price for project work — scope, materials and programme in writing before anything starts.

STEP 03

Installation

Booked to a date we keep. Work is left clean at the end of each day, and we tell you before the power goes off.

STEP 04

Test & certify

All work tested, certificates issued where required, and notifiable work registered with Building Control under Part P.

On pricing: fixed written estimates are provided for larger works after a site visit. Smaller maintenance visits are charged hourly at a rate we agree with you when you book — never a surprise on the invoice.

03 — Renewables

Solar PV and battery storage, designed for the roof you actually have.

An all-black solar array installed on the slate roof of a white rendered period cottage, photographed at dusk
6.72 kWp · period slate roof Fourteen 480 W all-black modules on a period slate roof — set square to the slate, kept below the ridge and inside the verges, so the array reads as part of the roof rather than bolted onto it.

As energy costs have risen, more clients are generating their own. We design and install residential and commercial solar arrays, with or without battery storage — and we install batteries on their own, charged on an off-peak tariff, where a roof isn't suitable.

We install on period and listed roofs as well as modern ones, and we set arrays out to sit properly — square to the slate, below the ridge line, clear of the verges. Every array is set out for the roof it is going on, rather than dropped onto a standard layout.

Panels are specified per project rather than from a single supplier, so you get the best available at the time of installation. As an MCS-certified installer, we handle the paperwork that makes your system eligible for export payments.

What the process looks like
  • Enquiry & remote survey No cost
  • Roof survey — measurements, access, scaffold On site
  • MCS proposal — yield, specification, payback In writing
  • Installation & DNO notification Handled by us
  • Handover & monitoring setup On completion
04 — What clients say

A hundred reviews on Checkatrade. Read all of them if you like.

We don't pick the flattering ones — the profile is public, and it goes back to 2019. See the full record.

“Best electricians in North London. Ross and his team are top professionals — they overhauled the electrics in my flat, including a new circuit board, in a couple of days. Efficient, trustworthy and good value.”
Residential client · Flat rewire · November 2024
“I've used Ross a number of times now, at home and at my place of business. He's one of those tradesmen you want to keep hold of, because he does exactly what's required, and properly.”
Commercial client · Ongoing maintenance · December 2024
“Cannot recommend Ross enough. Incredibly quick to respond and accommodating throughout.”
Verified review · Checkatrade · October 2025
“Professional, thorough and trustworthy — he explains everything clearly.”
Verified review · Checkatrade · July 2024
05 — Where we work

Electrical work in London and Cambridge.

LondonCambridge

Working across London and Cambridge, for electrical contracting and for solar. Anywhere else, ask — we will tell you straight if you are better off with someone local.

06 — Get in touch

Tell us what you need doing.

For anything urgent, call. For everything else, WhatsApp is usually quickest.

  • Office London
  • Office hours 08:00 – 18:00, Mon – Fri
  • Out of hours Emergency call-outs by arrangement

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