Electrician
GM Electrical Service
Trust score
79out of 100
Rating5.0★
Review volume766
Source diversity1 source
VerificationListed
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
About
Verified electrician in Guildford, Surrey.
Reviews · public evidence
What customers say
5.0out of 5
Highlights
"Garry is perfect gentleman, all work carried out with perfection, clean and tidy and everything explained in laymen's terms, wouldn't hesitate in using again or recommending to others."
"Garry Markham was recommended to us as unusually expert in his field and indeed he has carried out work for us which was very effective, undertaken very quickly and with the minimum of disruption. On this occasion he installed an up-to-date (fuse board) consumer unit to bring us into compliance with today's standards. He was flexible when we wanted to adjust the timing of the work and charming as ever."
"The whole process from initial meeting, to estimate to completion was faultless. We are very happy with the end result."
Detailed reviews
Garry is perfect gentleman, all work carried out with perfection, clean and tidy and everything explained in laymen's terms, wouldn't hesitate in using again or recommending to others.
Garry Markham was recommended to us as unusually expert in his field and indeed he has carried out work for us which was very effective, undertaken very quickly and with the minimum of disruption. On this occasion he installed an up-to-date (fuse board) consumer unit to bring us into compliance with today's standards. He was flexible when we wanted to adjust the timing of the work and charming as ever.
The whole process from initial meeting, to estimate to completion was faultless. We are very happy with the end result.
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Local context
Rated 5.0★ — in line with the local average for electricians in Guildford
Across 122 rated electricians in Guildford, the typical rating is 4.9★. We compare against the same businesses a homeowner would find searching for this trade locally.
Public evidence checks
Public evidence shownTrust checks and red flags
Public review evidence5.0★ from 766 public reviewsAcross CheckatradeCheckatrade
Sources
1 named sourcesEvery signal, traced to its origin
Review sources
Verify at the sourceCheck them yourself
Electrical work in homes in England & Wales should be done by a registered competent person who can self-certify it meets the Part P safety rules. Check they're on the official register.
Check the electrical registerPublic evidence checks
What's strong, and what to check yourself
✓Strong signals
✓Rating: 5.0★
✓Review volume: 766
!Worth checking yourself
!Source diversity: 1 source
!Verification: Listed
Smart checks
Before you hire an electrician
In England and Wales, notifiable electrical work (new circuits, a consumer unit, anything in a bathroom or kitchen) must by law be signed off under Part P of the Building Regulations — confirm they will handle that.
Prefer an electrician registered with a government-approved competent-person scheme (NICEIC, NAPIT or ELECSA) so they can self-certify the work meets the wiring regulations.
Insist on the Electrical Installation Certificate (or Minor Works Certificate) when the job is done — it is your proof the work is safe and compliant, and you will need it if you ever sell.
Ask to see a portfolio of completed work like yours, plus recent references you can contact.
Check the credentials and registrations that matter for this work — and that they are current.
Want an extra legitimacy check?
Run the Cowboy Checker on GM Electrical Service before you contact them.
