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.
Public evidence profile
GM Electrical Service
Credentials & registries
NICEIC
Trust Score
74out of 100
- Rated 5.0 from 766 reviews
- 3 reviews in the last 12 months
How this score is worked out
Rating5.0 / 5
Review volume766
Independent sources1 independent public source
Credentials1 credential shown
How this score is made up
What customers say54.8 of 60
Independent checks14.3 of 30
Track record5 of 10
See the independent checks
- Licences and credentials1.9 of 8.3
- Ways to reach them8.3 of 8.3
- Reviewed on more than one site0 of 6.2
- Registered company details4.1 of 4.1
- Photos of their work0 of 2.1
- Industry recognition0 of 1
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
Reviews · public evidence
What customers say
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Where these reviews are published
- Checkatrade766 reviews
Detailed reviews
These are the individual reviews we hold for GM Electrical Service, including the highlights above. The 766 headline total is the review volume reported across public review sources.
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.
Local context
Rated 5.0, in line with the local average for electricians in Guildford
Across 173 electricians in Guildford, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
From customer reviews
What customers consistently say
Recurring themes from 4 customer reviews on Checkatrade.
Respectful and tidy in your home: “all work carried out with perfection, clean and tidy” · Checkatrade, 28 Feb 2026
“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.” · Checkatrade, 28 Feb 2026
“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.” · Checkatrade, 28 Feb 2001
“On this occasion he installed an up-to-date (fuse board) consumer unit to bring us into compliance with today's standards.” · Checkatrade, 18 Dec 2025
“everything explained in laymen's terms” · Checkatrade, 28 Feb 2026
“everything explained in laymen's terms” · Checkatrade, 28 Feb 2001
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source reference
- 3080034
- Licence class
- Domestic Installer
- Source checked
- 26 Jul 2026
Sources
2 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Registers and membership directories
Check dates vary by source. Where we hold a date, the check shows it.
Services they list
Electric CookersElectric HeatingElectric RadiatorsElectric Range CookersElectric ShowersElectric Smart ThermostatsElectric SocketsElectric StovesElectric Vehicle Charger InstallationElectrical Heater RepairElectrical Under Floor Heating InstallationEnergy Efficient Lighting
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
GuildfordSurrey
The areas they list covering on a public directory; confirm they cover your address before you book.
What this business says about itself
From their own website
What this business says about itself
See their work: Facebook (opens in new tab)
- Emergency availability: available 7 days a week
- Areas served: Surrey, Guildford, Woking, Godalming, West End, Bisley
- Good to know: Free quotes
Accreditations it displays. Confirm each is current on the official register before you hire:
- NICEIC · verify (opens in new tab) · we hold this registration
- ELECSA · verify (opens in new tab)
- Checkatrade · verify (opens in new tab)
- City & Guilds qualified · verify (opens in new tab)
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Your own checks
What to check before you hire
Worth checking yourself
Their public evidence comes from a single source. Look them up on another site before deciding.
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 registerIn 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.
Want an extra legitimacy check? Run the Cowboy Checker on GM Electrical Service before you contact them.
Run Cowboy Checker →Independent checks
About this business
Website online sinceTheir website domain has been registered since 2015, according to the public domain registry. This dates the website, not necessarily the business.
Good to know
Common questions about GM Electrical Service
Is GM Electrical Service a legitimate business?
GM Electrical Service has 766 independent public reviews, rated 5.0 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about GM Electrical Service?
GM Electrical Service has 766 public reviews, averaging 5.0 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know GM Electrical Service's reviews are genuine?
GM Electrical Service's 766 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Has GM Electrical Service had recent public reviews?
GM Electrical Service has 3 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.
Is GM Electrical Service qualified and accredited?
We hold 1 independently sourced credential for GM Electrical Service, including NICEIC. Each is attributed to the body that issued it in the credentials section. For example, NICEIC is a government-approved electrical competent-person scheme whose members self-certify that their work meets the wiring regulations.
What does GM Electrical Service specialise in?
GM Electrical Service lists specialist services including Electric Cookers, Electric Heating, Electric Radiators, Electric Range Cookers, Electric Showers, Electric Smart Thermostats. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
What areas does GM Electrical Service cover?
They state on their own website that they cover Surrey, Guildford, Woking, Godalming, West End, Bisley. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.
When was GM Electrical Service's website registered?
GM Electrical Service's website has been online since 2015, according to the public domain registry. This dates the website, not necessarily when the business began trading.