Don't trust this company what so ever(CHECK RECENT GOOGLE REVIEWS THAT SHOWS HOW BAD THEY ARE AS UNFORTUNATELY I DIDN'T). Booked a cooker installation and was wary because of up front credit card details given up front. The installer arrived and claimed he would not be able to do it and just sat outside in his van(probably thinking great I got paid for doing no work). Highly suspicious because the old cooker was in the same place and got a landlords gas certificates every year I called another gas engineer who was able to fit me in between jobs within the hour and fitted the cooker with no issues and a landlords gas certificate for £95 including gas pipe. Plumbing force had already charged me £144 and any parts would have been on top. They refused to give a refund even after clear evidence there was no reason to refuse to install the cooker. They charge the earth and when clearly there should give a refund they will use the poorest excuses not to. Stay well away as if there's a problem that's there own fault they will never accept responsibility and you will never get your money back.