Endorsed by Which?

GMI Aerials Limited


104 Reviews

Opening Hours
Today - 08:00–17:00
  • Monday 08:00–17:00
  • Tuesday 08:00–17:00
  • Wednesday 08:00–17:00
  • Thursday 08:00–17:00
  • Friday 08:00–17:00
  • Saturday - Closed
  • Sunday - Closed

What is a Which? Trusted Traders Hertfordshire Trading Standards Approved Endorsement?

Which? Trusted Traders has partnered with Hertfordshire Trading Standards to create a Hertfordshire Trading Standards Approved endorsement. In addition to our standard trading standards assessment, this trader has had a DBS check and is subject to a Trading Standards intelligence check

Organisations and Awards

Aug 2020


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.

What we do

  • Aerial and satellite installers

    • Wifi Installations
    • TV mounting
  • Cleaning services

    • Gutter cleaning
  • TV services

    • TV aerials
    • TV installation
    • TV repair
  • Smart Homes

    • Home Cinema
  • More Services

    • aerial erectors
    • sky q
    • satellite
    • tv cabling
    • fm
    • dab

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

104 reviews
Customer Service
Sort by
Customer Service
Had a problem with receiving transmission on our televisions. Quickly and efficiently sorted by Geoff at a reasonable price.
Customer in Hertfordshire Posted on 10/05/2024 , work completed 10/05/2024
The trader replied (on 15/05/2024)
Hello and thank you for leaving GMI a review. We really appreciate you taking the time to do so when time is so valuable. So happy Geoff could help and look forward to serving you in the future. From Michelle at GMI Aerials.
excellent job, reliable, honest advice
Customer Service
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
Customer in Hertfordshire Posted on 14/11/2023 , work completed 21/04/2023
The trader replied (on 21/11/2023)
Dear Customer thank you so very much for such a glowing review, we strive to give 100% in everything we do and we are pleased that you felt you experienced a great service. We are always here to help at any time in the future. I have sent Geoff your review of which he too is grateful. All the best from Michelle and the team at GMI Aerials.
Freeview and Satellite Aerial service
Customer Service
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!
Customer in Hertfordshire Posted on 16/10/2023 , work completed 10/10/2023
The trader replied (on 19/10/2023)
Thank you for taking time out to leave a review. I have let Geoff know of your comments which has pleased him and all of us at GMI. We hope to assist you with any problems you have in the future. All the best from all at GMI Aerials
Loss of digital aerial signal.
Customer Service
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.
Customer in Hertfordshire Posted on 21/09/2023 , work completed 21/09/2023
The trader replied (on 25/09/2023)
Wow what a fantastic review! We all strive to give the best possible service here and it's wonderful to receive a review acknowleging our service ethics. Thanks so very much from all the team at GMI Aerials.
Superb Job
Customer Service
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.
Customer in Hertfordshire Posted on 31/08/2023 , work completed 29/08/2023
The trader replied (on 01/09/2023)
Hi. Thank you so much for your 5 Star Review on WHICH and by email yesterday. I have read your comments to Geoff and he is very happy that he has been able to sort out your annoying interference problems. Any time you need us in the future, we will be there to assist. Wishing you well. from Michelle and Geoff.
Simply Excellent
Customer Service
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
Customer in Hertfordshire Posted on 25/07/2023 , work completed 25/07/2023
The trader replied (on 27/07/2023)
Thank you for such a positive review. I will let Geoff know of your comments which will please him very much. You know where we are if you need us in the future. Best regards from Michelle and the Team at GMI. :)
A good job by a professional
Customer Service
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.
Customer in Hertfordshire Posted on 12/01/2023 , work completed 12/01/2023
The trader replied (on 19/01/2023)
Hello. I would like to thank you personally for your 5 star review. I know people are very busy these days so I am especially grateful that you have taken time out to put your sentiments in writing. From all here at GMI Aerials - Thank you.
Good Quality and Reliable
Customer Service
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
Customer in Hertfordshire Posted on 02/11/2022 , work completed 01/11/2022
The trader replied (on 03/11/2022)
Thank you for providing your 5 star review. We really appreciate you taking the time to do so as we know life is so busy. So thank you again and we look forward to assisting you with any TV/Satellite/Guttering needs in the near future.
Excellent new TV aerial.
Customer Service
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.
Customer in Hertfordshire Posted on 23/06/2022 , work completed 10/06/2022
The trader replied (on 01/07/2022)
We are delighted to receive your review and for your update into how everything is now much better after using our services. We are always here to help and wish you well. from Michelle and all at GMI Aerials
Examination & Replacement Aerial
Customer Service
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 Hertfordshire Posted on 13/04/2022 , work completed 13/04/2022
The trader replied (on 26/04/2022)
Hello, I know who this customer is as you kindly emailed me and left me a telephone message and I would just like to say thanks again for a fantastic review. This means the world to us and we are very grateful to you too. All the best - Michelle and the Team at GMI Aerials.