I was referred to Paul by another tradesman, who recommended Paul as somewhat of an expert in Valliant boilers. Turns out this is very true, our boiler was installed by another company (not Paul or anyone associated with Paul) and we have had nothing but problems with it from the day it was commissioned. I got in touch with Paul and he was around the week after. He spent a good hour going over the electrics checking a modifying the way the boiler was wired, so as to rectify and prevent the error codes that kept coming up. Some operational tests were performed and all was good. It made sense to get Paul to perform a service to the boiler as it was approaching a year old. This was done with efficiency and minimum fuss. So, I would highly recommend Paul for any boiler diagnostics repairs and servicing, especially if they are Valliant/Gloworm. 5* service all round.