ADT UK&I Reviews 

36,208
TrustScore 4.5 out of 5

4.6

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Review summary

Created with AI, based on recent reviews

Looking at 4,377 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the staff for their professionalism, helpfulness, and extensive knowledge, often explaining complex details clearly and patiently. People frequently highlight the excellent service, smooth installation processes, and efficient handling of their security needs, appreciating the stress-free experience and commitment to satisfaction. However, some customers also noted concerns regarding product functionality and aspects of customer communication. A few people experienced issues with alarm systems not being loud enough or specific components not meeting expectations, such as doorbells only sending push notifications or older sensors remaining. Additionally, some reviewers were not happy with communication, citing a lack of follow-up on reported faults, issues with the accounts department, or limited technical support hours.

What people talk about most

Staff

Clients share positive opinions on staff, with many reviewers praising the helpfulness, professionalism, and... See more

Service

Customers had positive experiences with service, often highlighting the helpfulness and professionalism of... See more

User experience

Customers consistently note positive experiences with user experience, highlighting clear explanations and... See more

Customer service

Consumers find customer service to be positive, with many reviewers praising the helpfulness, politeness, and... See more

Product

Users describe ambiguous interactions with product, with some customers praising the quality and... See more

Reviews shaping this summary

Rated 5 out of 5 stars

First time calling the tech support as appeared to have an issue with our pad who h kept stating low battery after a power cut. Chadra was excellent and explained everything in laymen's terms which wa... See more

Company replied

Rated 5 out of 5 stars

Glen Clarke from ADT Alarms was fantastic from start to finish. He was polite, professional, and genuinely friendly throughout the whole visit. He took the time to explain everything in detail, walkin... See more

Company replied

Rated 5 out of 5 stars

Engineer for upgrade to alarm system arrived on time and explained clearly and precisely what he was going to do. Second fix engineer was very helpful and also explained what he needed to do. Cu... See more

Company replied

Rated 5 out of 5 stars

The entire team I spoke with were very professional and helpful, always happy to help and knowledgeable. The problem was resolved after the team call every day until the time was right to update and r... See more

Company replied


Company details

  1. #32 of 49 best companies in Security equipment
  2. #13 of 20 best companies in Security service
  3. #11 of 15 best companies in Security System Installer
  4. #11 of 20 best companies in Security system supplier

About ADT UK&I

Written by the company

Since 1874, we’ve been the leading provider of fire and security systems for homes and businesses across the UK and Ireland. 145 years on, we now provide over 400,000 residential and small to medium business customers with round the clock protection. We offer 24/7 monitored burglar alarms, the latest smart security, CCTV systems, monitored smoke & carbon monoxide detectors and the peace of mind that our experts are on hand 24/7/365. For urgent customer support simply call 0344 800 1999.

MyADT

The quickest way to access support and help.

The quickest way to access support and help.
Using either the mobile app or web portal, MyADT is designed with you in mind and is the quickest and easiest way to securely manage your account and access help and support, without the need to call or email. MyADT is available for all UK customers and allows you to: • Update keyholders • Update account and billing details • Review and pay bills • Log faults and request technical support – such as battery changes and devices not responding. • Book and amend inspections • Log requests for additional equipment and devices To find out more or to get started please visit www.adt.co.uk/myadt or download MyADT from the app store, new and first-time users may be required to register first.

Contact info

4.6

Excellent

TrustScore 4.5 out of 5

36k reviews

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4.6

All reviews

(36,208)

4,327 reviews in the last 12 months

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Rated 5 out of 5 stars

ADT alarm system reinstalled

I was very impressed with ADT from the very first contact through to the reinstallation of my alarm system (which had been left by the previous owner of the house). They guided me through the entire process step by step, making everything straightforward and stress-free.
A special mention to Olly, the engineer who carried out the (re)installation. He was polite, professional, and incredibly helpful throughout. I couldn't have asked for better service. Super recommended!

22 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're happy to hear that your experience with us, from initial contact to the reinstallation of your alarm system, was impressive. It's great to know that the process was straightforward and stress-free. We appreciate your special mention of the engineer's politeness, professionalism, and helpfulness.

Best Wishes
Blake

Rated 5 out of 5 stars

Alarm upgrade work

Engineer arrive at the beginning of the selected time slot and carried out the work in a reasonable time.

22 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear that our engineer arrived promptly and completed the work efficiently. We appreciate you taking the time to share your positive experience.

Best Wishes
Blake

Rated 5 out of 5 stars

Installation done well and with minimum…

Installation done well and with minimum of disruption. Engineer very helpful and considerate of our needs. ADT were all very willing to explain things and make process as smooth as possible

21 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear the installation was done well with minimal disruption. We appreciate your kind words about our engineer's helpfulness and consideration, and that the process was smooth.

Best Wishes
Blake

Rated 5 out of 5 stars

Matthew Woodall kept me informed about…

Matthew Woodall kept me informed about his time of arrival and also what he was going to do with the alarm service. He was very polite and efficient.

22 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear our team member kept you well-informed about their arrival and the alarm service. We appreciate your kind words about their politeness and efficiency.

Best Wishes
Blake

Rated 5 out of 5 stars

The young man was well presented…

The young man was well presented punctual courteous and considerate. He explained what he was doing and was patient in demonstrating to me how to use the new equipment.

22 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear about your positive experience! It's wonderful that our team member was well-presented, punctual, courteous, and considerate. We appreciate that they explained everything and patiently demonstrated how to use the new equipment.

Best Wishes
Blake

Rated 5 out of 5 stars

Polite gentleman very obliging

Polite gentleman very obliging

22 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
We appreciate your positive feedback and are so happy to hear that our team member was polite and obliging. Thank you for your kind words!

Best Wishes
Blake

Rated 5 out of 5 stars

Upgrade to alarm system

Engineer for upgrade to alarm system arrived on time and explained clearly and precisely what he was going to do.

Second fix engineer was very helpful and also explained what he needed to do.

Customer Services helped with finding a date for visits that suited me.

22 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear about your positive experience with our team! It's great that our engineers arrived on time and clearly explained their work. We're also happy that customer services helped find convenient dates for your visits.

Best Wishes
Blake

Rated 5 out of 5 stars

Really efficient and helpful

Really efficient and helpful. Told me about features of the alarm I didn’t know about and how to use them. Great customer service

22 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear about the efficient and helpful service you received! We're especially pleased that our team could inform you about features of your alarm you didn't know about.

Best Wishes
Blake

Rated 5 out of 5 stars

Professional

Professional, helpful neat tidy

14 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're happy our service was professional, helpful, neat, and tidy. Thank you for your positive feedback, we appreciate your time.

Best Wishes
Blake

Rated 4 out of 5 stars

Helpful, supportive and very informative throughout

We were kept in touch throughout the process, advised what will be done, kept interruption to the minimum, answered all queries, were helpful and supportive. Made sure all was running and setup before leaving.

22 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're happy to hear you were kept informed throughout the process and that interruptions were minimal. We appreciate that all your queries were answered and that everything was running smoothly before we left.

Best Wishes
Blake

Rated 1 out of 5 stars

Rubbish new alarm systems (stay away)

I had a ADT Alarm system installed many years ago (hardwired) was a great system, did the job perfect, very loud very loud and had a CO2 system as part of the deal. That alarm system recently developed a fault and I stupidly instead of getting repaired maybe chose a new ADT system these new WIFI enabled systems WHAT A LOAD OF RUBBISH, please keep away maybe perfect for business premises but not the home. The system is not loud at all there is no chance a intruder would be deterred by the sound of this alarm system, I know ADT will reply and state they are a monitoring alarm service company but what will that do for me if my alarm system goes off at night while me and my family sleep how will we prepare ourselves in that event as we would not hear the alarm go off and I may not hear phone notiications.

Very poor alarm system please look for alternatives Verisure being one who offered me a internal siren as part of the package and ADT wanting to charge me over £250 for a internal siren, even though being a customer for over 26 years!!!!

Now ADT will not allow me to cancel my contact even though its been around 6 days since I had the alarm installed but complained on the day of the installation, very rude, arrogant customer services and complaints team..

Shop around guys ADT is not always the best !!!!

17 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
Thank you for sharing your experience with us, we are sorry to hear you were disappointed with the service. We have reached out to you for further information but have sadly had no response and can therefore offer no further assistance at this time.

Best Wishes
Blake

Rated 1 out of 5 stars

ADT Failure to have technical support from 7pm to 7am for residential alarm systems…

Failure to have technical support for domestic customers from 7pm -7am has been the company position currently and for at least most of this year . Having been a customer for more than 14 years , i have seen unacceptable changes in standards of service since mergers with other companies over the years. Including over many months no technical qualified support in the evenings. Sadly i had to monitor my own system, when alarm went off in the early hours and calling to find out why I and key holders had not been called. To learn the system had not been receiving appropriate signals ( due to engineer visits) to upgrade system and alleged failed to reset and set up correctly after upgrade. This was to say a very worrying experience and to have to do the investigations ADT should be doing. The customer should not be monitoring and being expected to scrutinise standards that fall below what the customer is paying for in their contract, is unsafe and unacceptable.
I would urge other customers to seek their records from ADT of signals and system setting. Insurers in the event of an incident will no doubt be checking your policy and declarations and system record of alarms to central station. I have had to raise an issue with NSI due to lack of adequate responses from ADT. Engineers are always pleasant when they attend but where the failure truly arise and the cause and clarity are factually severely lacking.

20 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
I am sorry you are dissatisfied.
I can see a member of our dedicated team are in communication with yourself regarding this matter.
Thank you for providing your feedback, I can advise that it will be used, for improving the levels of customer service that we provide in the future.


Best Wishes
Blake

Rated 5 out of 5 stars

It didn't take long for the appointment…

It didn't take long for the appointment and he turned up on time and was very approachable.

14 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're so glad to hear that your appointment was scheduled quickly and that our team member arrived on time and was approachable. We appreciate your positive feedback!

Best Wishes
Blake

Rated 5 out of 5 stars

ADT engineers were very thorough in…

ADT engineers were very thorough in whatever they were doing and were very helpful and explained in detail how the new system works.

14 July 2026
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're delighted to hear our engineers were thorough, helpful, and explained the new system in detail. We appreciate your positive feedback!

Best Wishes
Blake

Rated 5 out of 5 stars

Alarm had minor fault

Alarm had minor fault. Hastin came quickly and did an amazing job!

22 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
We're so glad to hear Hastin provided amazing service and resolved the alarm issue quickly for you. We appreciate your positive feedback!

Best Wishes
Blake

Rated 5 out of 5 stars

The person I spoke to was able to help…

The person I spoke to was able to help me with my problem of resetting my cameras after my Internet changed

21 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

We're delighted to hear that our team was able to successfully assist you with resetting your cameras after your internet change. Thank you for sharing your positive experience!

Rated 5 out of 5 stars

5* to Jack who came to upgrade our home…

5* to Jack who came to upgrade our home alarm system. He explained everything he was going to do. Asked if there was anything we were unsure about. When he had finished, he showed us and explained how to use the new system. Very happy customers.

14 July 2026
ADT UK&I logo

Reply from ADT UK&I

We're happy to hear that the alarm system upgrade was a positive experience. We appreciate your feedback regarding the clear explanations and demonstration of the new system. We're glad you're very happy customers.

Rated 5 out of 5 stars

The entire team I spoke with were very…

The entire team I spoke with were very professional and helpful, always happy to help and knowledgeable. The problem was resolved after the team call every day until the time was right to update and resolve once and for all. The problem is now resolved, thanks to the team, not one but a few persons who called daily to check on things. A very big five start and hundred percent satisfaction. Thank you

16 July 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

We're delighted to hear that our team was professional, helpful, and knowledgeable in resolving your issue. It's wonderful to know that daily calls ensured a complete resolution. Thank you for your very positive feedback and 5-star satisfaction!

Rated 1 out of 5 stars

I ordered a system and paid a £250…

I ordered a system and paid a £250 deposit, the system wasn't right for us so we cancelled on the 19th june and told it will take 10 working days for a credit, this never happened so I phoned again and was told it has been cancelled and will receive my refund. Another wk later I phoned again and was told its definitely been cancelled on the 6th July and ill get a refund in 10 working days, im now on day 12 and still no refund I think I need to contact the ombudsman this is just a shocking service I have to give at least one star on here or it would have been a zero

19 June 2026
Unprompted review
ADT UK&I logo

Reply from ADT UK&I

Hello,
Thank you for your review, I can confirm a member of our dedicated team will investigate further and contact you.

Best Wishes
Blake

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