Friendly experts Jason and his colleagues were friendly and knowledgable: they clearly know their business well. Communication was always good

The service is very satisfactory The service is very satisfactory , finishing the job on time is not

Amazing work completed so quickly and… Amazing work completed so quickly and efficiently. They were very clean & tidy and got the job done in no time. Would 100% recommend.

Well priced, helpful and friendly We got in touch after receiving a quote elsewhere we perceived to be extortionate. within days of enquiring, Crystal Sigma were in the premises and produced a quote which was far more competitive. Following that within a week or so we had the Unit fitted. Very pleased with the service from the office staff as well as the two guys who fitted the unit. Very impressed with the entire service

Excellent workmen Excellent workmen; trouble with the office.