Customer Reviews

A selection of comments from our clients.  We’re only happy when you are, so it’s good to hear from you.

Mr Cass

I was very happy with the work SDS did. On time and to budget and the installer was very tidy and found a way to install the system with minimal internal or external property damage.

Security Company London

Angela Holy-Hasted

I have used SDS Security Ltd to provide my security needs for the last 19 years. I have chosen to stay with them for this period of time as their staff are always reliable, courteous and helpful.

Having been a customer of SDS Security Ltd over this length of time it is apparent that there good reputation has grown over the years and I would have no hesitation in recommending their services.


We have been SDS customers for 12 years and cannot fault the service they provide. I have total faith in their security services.

The customer service is exceptional and when I do stupid things like put the alarm on from habit forgetting I am leaving my mum in the house they are very understanding! When we renovated our home we went through all options available to us and I feel we got really good advice and were not sold anything we didn’t need.

SHM Services

Our property management company has been using the service of SDS for some 20 years. The estimates are competitive, detailed and accurate.

The engineers are diligent and considerate with the installation neat and tidy. The follow up and after service is without fault.

Security Company London

G.G March

I have been a customer of SDS for over ten years and they look after all our security . What makes this company different is the people .

Whether it’s the office staff , the alarm engineers , the fire extinguisher crew, or the team fitting and indeed repairing the remaining paraphernalia ,all of them I have found to be competent ,friendly , on time and a pleasure to have in the house. For us SDS’s great strength is that the company operates like a family business.

Nearly all the employees who I first met over a decade ago are still with the group ,so the level of trust ,which in a security business is essential is total, and that is a great comfort.

Diane, The Superyacht Group

We have worked with SDS Security Ltd for several years now, covering all aspects of our office security and maintenance.

I have always found the staff to be knowledgeable, helpful and responsive to any enquiries, both from the admin side and the engineers who carry out the site visits. I am very happy to recommend this company for an efficient and reliable service.

Security Company London

Sally Lang – Lang Communications

We started using SDS back in the 1980s, in south-west London, and have called on them ever since for our premises’ security needs, most recently when we moved to our new SE1 offices in September. The alarm systems have been reliable and problem free. Justina and the other office staff are both helpful and efficient, and the engineers friendly and skilled.

SDS has again helped us to achieve a low-stress relocation. We are a company of corporate copywriters. We aim to build long-term relationships with our clients through providing a high standard of service. We appreciate it when suppliers – such as SDS – work in the same way.

Robin – South London

We have been SDS customers for our intruder / fire alarm for more years than I can remember – at least 20, I am sure.

We initially chose SDS because they were local and highly recommended. We have regular annual maintenance and the system has always been very reliable, with as far as I can remember only ever one non-scheduled call out. The best thing of all is that for the rest of the time we simply don’t need to think about it. I can’t imagine us ever going elsewhere.

Luke – Kensington

Recent new alarm and entry phone system installed. Very satisfied with all aspects of SDS. Special thanks to the onsite engineer who was very friendly, highly skilled, efficient and tidy. Thank you.

Security Company London

Jenny – North London

We have found the office and managerial staff, surveyors and engineers all to be extremely efficient. The results of their efforts and services are always helpful and conclusive.

This means that we will always use and recommend them, without question. We wish that all services were as outstanding as SDS.

Tristan – Battersea

Just a quick note to say that William your engineer who came round to help with a fault this morning was superb.

He fixed the issue quickly, was helpful and polite and is a credit to your business. Thank you.

Security Company London

Michael – Fulham

This being our first burglar alarm we found the survey and initial advice from SDS very helpful in making our decision. The engineer was very efficient and nothing was a problem, all in all a great company and have recommended to friends who have all had a positive experience.

Security Company London