O.K Thanks for reply Dan but still slightly baffled. Why is he showing up on gas safe site, van logo'd, id badge etc?. this was a service on ancient baxi, seemed to know his stuff working a treat now. Discussed time to replace (25 years old, expensive to run, slow to warm rads ect) He suggested greenstar, I asked about intergas. Said he hadn't heard of. fair enough. seemed keen enough to do job til iI mentioned wb extra warry if fitted before year end. then phone calls not returned, would phone and didn't. you get the idea. so assuming gas safe site is up to date, you would know this better than I, what is the purpose of being flue analysis registered if you don't have the gas boiler ticket? would have thought you would need boiler to then get gas analysis.Or do both at same time.
Sorry for long post but trying to understand logic here. (gsr not Ideal). may explain three steps backward when reistering with wb for extende warry. was concerned.