Prompt knowledgeable service with low cost. A truly experienced professional with very good communication skills. Highly recommended.

Excellent Would highly recommend

Efficient service at a really good price

Very efficient and helpful. Much appreciated.

Outstanding service, Dennis was really helpful and very knowledgeable. I will recommend him to anyone who need repairs or help with their double glazing.

what a fantastic service.

Good service and great pricing

Really great repair service which saved us from having full replacements. Friendly. helpful and prompt service, would definitely use again.

Brilliant service all round - a great job done very considerately, excellent communication.

After a lifetime in glazing, Dennis Nicholson knows his stuff, and does a truly excellent job.

The service offered here was first class. The window in the Upvc door of my morher in law’s house had been smashed and needed replacing. It was sourced and replaced by Dennis and at all times he kept Doreen informed, in particular letting her know when he was coming to the house. This was important to Doreen who aged 93 and very hard of hearing becomes anxious when people call. Well done Dennis.

brilliant company, really friendly and helpful, top class service and quality

friendly efficient service. Dennis thoroughly explained the problem and solution..lm extremely grateful to his speedy response to my problem. I certainly would not hesitate to call him again if needed again .i

Excellent service two windows replaced because seals had gone, quick and efficient and no mess, thoroughly recommend

This is the 2nd time we have used Castle Lock. Mr Nicholson came out when he said he would, identified the problem and fixed it - at what I thought was a reasonable price for the time he spent and providing the part. I would have no hesitation in recommending him to anyone else.

Great service, really happy with all the work done, Denis is a really nice guy, will have no problem recommending to my freinds and family

An excellent experience from start to finish. Dennis was very knowledgeable, he supplied and fitted 2 large double glazed units in no time at all, cleaned the windows, fixed another window, and took the old units away. All for less than £300 - Thanks Dennis.

Fantastic service felt like I was in safe hands! One of the nicest guy’s I’ve had the pleasure of dealing with, fair priced for quality work! Will use again if I have any other problems with the windows in my house.

Dennis gave excellent service + was very professional + prompt . He did a very difficult repair to a window lock which was on the top floor of an apartment block and very difficult to get to - but Dennis managed and was determined he was going to repair this for me + was very reasonably priced . I wouldn’t hesitate to use the company again as I was delighted with the job well done . Thank you Dennis .

Prompt service, good quality work, good price for the job. Highly recommend.