I know - the Potterton Heateam deal is £299, spread over in payments. So , as I understand it, if you have a fault, you join up, get repaired and have cover for 1 year. So, if my fault is anything in that price region it may be worth doing. By the way, the first plumber i mentioned in this thread, was unavailable all day -said he'd phone , but didn't. I was ready today til about 3pm to travel from Reading to Hastings to deal with this. Kept phoning to see how it was progressing getting the gas valve - no reply. So foned round and found another plumber(who said would be v surprised if it was gas valve and laughed when I said that previous guy had to look in the fault diagnosing bit of my manual - that came with the boiler). Booked new guy after final try to get hold original.
Then the original guy phoned and said he'd left his phone at home all day - how likely is that for a plumber. I work freelance and CAN'T leave my phone at home. He said the part was on the lorry and he'd get it tomorrow and fit it. .......uh oh........when I told him it was too late - I couldn't raise him and couldn't risk leaving the woman and toddler with no central heating (i've given her an electric heater)or hot water and so I'd had to book someone else, he hung up! I feel bad