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Client Feedback

We’ve been helping customers with their leak detection and trace heating for almost 20 years.

Hear what some of our customers have to say about their experience with Diamond Controls.

“I just wanted to say what a great job your lads are doing onsite for us, really helpful and keeping me in the loop with any issues that arise so I can get it sorted for them ASAP.”

“Please pass on our thanks to your operatives that attended site last week.  Richard and his team were most helpful and nothing was too much trouble.  A really great team.”

T Clarke Contracting Ltd

“I will definitely make contact with Diamond Controls on all future projects where Leak Detection is required.”

The Michael Lonsdale Group 

“Joe is an excellent engineer, communicates very well with us and we enjoy having Diamond Controls on site. Look forward to seeing him again on the next visit.”    

University of Oxford 

“Diamond Controls is a very reliable company that provides a good service. They always try to accommodate even when unrealistic time scales are requested.”

Contracts Director, Envirotech Services Ltd 

“Diamond Controls who did the service for us are one of the best companies we use in regards to leak detection and such systems as we have at Rathbone Markets. They are very thorough and happy to help over the phone if required.”


“Once again you guys did a splendid job with no fuss or bother and I look forward to receiving the drawing.”

Consultant, Corporate Services, 20 Bank Street, Canary Wharf

“I want to thank you for your patience on this job. As always we were put under pressure from the builders and it’s a breath of fresh air to have Diamond Controls on site.”

Project Manager, Sale Service & Maintenance Ltd

“I would just like to say thank you for all your help and especially arranging everything in such short notice. It’s been a pleasure working with Diamond Controls. The engineers were very helpful and ensured the system was properly tested and commissioned. I was very impressed on the effort and time spent going up and down to each room, especially as there were 5 floors of guestrooms.”

M&E Project Co-Ordinator, Vascroft Contractors

“I’d like to pay compliment to the level of professionalism offered by Diamond Controls on this project. The training and commissioning process and packages provided were all top dollar.”

Mechanical Project Manager, Mechanical Services Ltd

“Thank you for the report and the work the team did on Saturday. Really nice work and thanks for also running the BTI cable in situ with your cable very much appreciated.”

Maintenance Manager, Glencore UK Ltd

“Diamond Controls were excellent on the LD7 project and an incredibly responsive and knowledgeable specialist. Definitely one of our top performing subcontractors.”

Crown House Technologies

“We have had seven no leak detection panels and numerous sensors installed at 80 Eaton Square by one of your preferred contractors Diamond Controls. They did a fine job and I would recommend them to anyone.”

Tony Whitehead via Aquilar

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