In reply to marsbar:
The hotwater is problematic, the boiler lights up and it runs for a few seconds and then goes back to pilot light, there is a clicking sound coming from the Gas Valve. Its just keeps repeating this on off thing. The CH is fine. I saw somewhere on a forum about it being a switching problem opening the valve.
I'm thinking of getting it repaired and save up for a new boiler, it'll be cheaper to do both of these things than to go 3rd party.
I had a PDF broacher sent to me by one such 3rd party and they wanted £2200 for the boiler I wanted, on the internet I found that very boiler for £873 at Plumb Nation with free delivery. I suppose you are paying the additional for the chance to have it on the never never.
Jason