So these look to be the correct parts.
http://www.heatingpartscenter.co.uk/product.asp?strParents=&CAT_ID=790&P_ID=11596
Will have them ordered and hopefully the problem will be resolved, thank you for all your help and patience so far :)
By the connecter to the DHW throttle I assume that this is the white connecter that is plugged into the DHW flow, not visable in the picture i uploaded.
I just did that and there was no change at all, unless I misunderstood (the manual isn't exactly helping understand everything).
Last night my boiler a Chaffoteaux and Maury Britony Combi 80 started having a problem in that it is not giving hot water.
Whenever I turn a hot water tap on the flame is not igniting as it should to heat up the water, and as such getting cold water.
Also tested to see if I would give hot...