GMI Aerials Limited

Welwyn Garden City5.0· 117 reviews · 2 sources
Trust score
83out of 100
Rating5.0★
Review volume117
Source diversity2 sources
VerificationListed

Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.

About

GMI are an independent, family run business established in 1995. We provide a friendly, honest and competitive service. We understand that television viewing is an integral part of your home entertainment. Our aim is to ensure you enjoy the best and most reliable reception possible. We are specialists in the installation, realignment and repair of Digital TV/FM/DAB Aerials, Satellite Dishes/SKY +/SKY Q/FREEVIEW/FREESAT. We also provide new cabling and Wall Mount TV Sets. All our engineers are Industry Qualified and have up to date training throughout the year. We only use top quality equipment prolonging the life of systems, therefore benefiting our customers and being cost effective. Our customers have been coming back to us again and again for 25 years because we have their trust and they know we are going to diagnose the problem and fix in a timely, conscientious manner and at a fair price. From domestic homes to blocks of flats, office developments and stately homes. We are here to help you.

Reviews · public evidence

What customers say

5.0out of 5
117 reviews in public evidenceCross-checked across 1 source
Which? Trusted Traders117 reviews · 5.0 avg

Highlights

"I needed a new aerial as changed from cable TV I rang GMI Aerials and got a very prompt service they carried out the work the next day excellent job done very tidy work and very helpful and polite staff. Would definitely recommend this company and will use them again if I need anything else done."

Customer in HertfordshireWhich? Trusted Traders5.0 rating

"Our TV aerial was damaged in the recent storms. GMI proved reliable and efficient. The engineer turned up at the agreed time, made his diagnosis, explained the problem and got to work. The outcome was a new aerial with cabling at a very acceptable price. The engineer was friendly, helpful and efficient."

Customer in HertfordshireWhich? Trusted Traders5.0 rating

"I contacted this company during the week of 4th April 2022. Arrangements were made for an engineer to attend the following week (13th April) Dave looked at the situation and immediately identified that one of the 2 aerials I had was not required and that the other one was disintegrating. He gave me a quote there and then to remove existing aerials and their cables, remove all unnecessary cables and fit a new aerial. He found a major fault with the main aerial which had been causing me problems which was good for me to know. The work was completed and he removed the original aerials and cables etc from my property. He made sure the signal from the new aerial was good. In fact it was excellent. Dave was an absolute gentleman. I would strongly recommend this company. Polite, Courteous, Respectful of Property and Professional."

Customer in HertfordshireWhich? Trusted Traders5.0 rating

Detailed reviews

Customer in Hertfordshire5.0 / 5

I needed a new aerial as changed from cable TV I rang GMI Aerials and got a very prompt service they carried out the work the next day excellent job done very tidy work and very helpful and polite staff. Would definitely recommend this company and will use them again if I need anything else done.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Our TV aerial was damaged in the recent storms. GMI proved reliable and efficient. The engineer turned up at the agreed time, made his diagnosis, explained the problem and got to work. The outcome was a new aerial with cabling at a very acceptable price. The engineer was friendly, helpful and efficient.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

I contacted this company during the week of 4th April 2022. Arrangements were made for an engineer to attend the following week (13th April) Dave looked at the situation and immediately identified that one of the 2 aerials I had was not required and that the other one was disintegrating. He gave me a quote there and then to remove existing aerials and their cables, remove all unnecessary cables and fit a new aerial. He found a major fault with the main aerial which had been causing me problems which was good for me to know. The work was completed and he removed the original aerials and cables etc from my property. He made sure the signal from the new aerial was good. In fact it was excellent. Dave was an absolute gentleman. I would strongly recommend this company. Polite, Courteous, Respectful of Property and Professional.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Many thanks for fitting new TV aerial. The reception, sound & colour is so much better even on the old TV. We now fully set up with 2 TVs.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

We used this company to realign a satellite dish. Jeff arrived promptly and when he said he would. He carried out the work quietly and efficiently - really good work

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Our external roof aerial had survived for over 40 years, but was increasingly insecure and potentially dangerous. Our experience with GMI was wholly trouble free. The appointment was made earlier this week, and Jeff arrived, assessed and priced the replacement installation at an acceptable cost. The installation was concluded in around an hour, and he checked that the reception on our TVs was at its best. We would happily recommend.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

A very fast response to the loss of our TV signal and an excellent result - friendly, efficient, competent, - what else is there to say - highly recommended

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

We called GMI Aerials out to diagnose a strange interference that even the BBC couldn't help identify. Geoff was with us in two days and would have been quicker if I'd been in. He identified the problem as a very old signal amplifier causing problems with 4g and 5g signals, and also identified a faulty socket on another TV that we hadn't recognised as a problem because of the major interference. He renewed all the faulty equipment with no mess and was friendly, polite and professional throughout. I'd wondered if we needed a new aerial but he checked and assured us that we didn't, avoiding several £100s more cost that another installer might have charged. Superb service and great value.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Geoff diagnosed the problem in a few minutes and was able to fit a new wall socket and power unit . Friendly and professional service in less than half an hour. This should be your go to expert for aerial services, look no further. Superb quality service, thank you.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

We booked the services of GMI Aerials through the "Which? Trusted Trader" recomendation and very pleased with the result. Arrived on time and quickly assessed our problem - very pleasant guy who really new his trade. We would certainly use GMI Aerials again. Thank you!

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Geoff was prompt, reliable & knowledgeable. His quote matched the clear pricing structure on his website. He gave me honest and expert advice, & did an excellent job at the unenviable & precarious task of replacing the heavy old broken aerial on our chimney stack, plus installing new aerial points. Trustworthy & friendly, as is Michelle in the office, thanks to both. I 100% recommend GMI Aerials

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Had a problem with receiving transmission on our televisions. Quickly and efficiently sorted by Geoff at a reasonable price.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Enquiry dealt with quickly and efficiently, questions answered simply. We were offered an earlier slot as Geoff had finished a job quicker than he expected. Arrived on time. We discussed the job and he gave advice which was accepted. Well pleased with the result 😀. Would recommend GMI Aerials.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Turned up on time, knew what he was doing, polite, tidy all at a a sensible price. Highly recommended.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Geoff, the engineer from GMi Aerials, did an excellent job replacing an old aerial and cabling that was no longer working properly with a new, modern aerial that works perfectly. Geoff is extremely professional and a pleasant person to deal with. We would recommend GMi Aerials without hesitation.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Geoff arrived promptly and quickly diagnosed the fault (the aerial booster in the loft had failed). The booster was replaced and reception is now perfect. We are very pleased with the service we received and would definitely use GMI again.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

Contacted GMI via email following Storm Darragh, which finished off our 40-year-old aerial. Next morning GMI confirmed our preferred appointment time (12/12/24) - arrived on time on the day, job done to remove old aerial and install new aerial very quickly and efficiently (45 minutes). We are very satisfied customers and would highly recommend GMI.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

I had an aerial installed on my new chimney stack with a cable run to the tv/amplifier position in the living room. The work was carried out quickly and efficiently to the quoted price. I would recommend them to others.

Which? Trusted Traders
Customer in Hertfordshire5.0 / 5

I contacted GMI aerials to arrange an additional aerial socket. Michelle was friendly and courteous and arranged for Geoff to call to review. I was provided with all pricing options to cover the scenarios which might occur - from replacing all cables and the aerial to adding amplifiers to boost the signal. Geoff arrived, identified what needed to be done and did the work quickly and professionally - going above and beyond. In the end, I did not need a full replacement of the aerial and Geoff explained everything and checked all the work. Geoff and Michelle are professional, friendly, courteous and fair in their pricing. I thoroughly recommend them to anyone who needs help with TV aerial work

Which? Trusted Traders
(your username)5.0 / 5

We needed to have an aerial installed for use throughout our home. We chose GMI as they are listed by Which as a Trusted Trader and we wanted to be confident that we were using a reliable company with skilled operatives. It was an excellent choice. The service was first class and we are very satisfied with the work undertaken.

Which? Trusted Traders
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Public review evidence5.0★ from 117 public reviewsAcross Which? Trusted TradersCompanies HouseWhich? Trusted Traders
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2 named sources
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Rating: 5.0★
Review volume: 117
Source diversity: 2 sources
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!Verification: Listed

Public evidence last checked May 2026

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Common questions about GMI Aerials Limited

What do customers say about GMI Aerials Limited?

GMI Aerials Limited has 117 public reviews, averaging 5 out of 5, gathered across 2 independent sources. You can read the individual reviews and where each came from in the reviews section above.

How do I know GMI Aerials Limited's reviews are genuine?

GMI Aerials Limited's 117 public reviews are gathered and cross-checked across 2 independent public sources. Reviews spread across several named sources are harder to fake than a single polished 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.

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