Ive just spoke with a rather unhelpful chap on the Caradon Stelrad
Ideal Boilers helpline.
But just before he sussed I wasnt a qualified heating engineer
and bottled up, he said "Have you checked the burner pressure?"

I asked if he meant the gas pressure going into the gas valve,
and he said no.

Does anyone hear know how and where to check the burner pressure and
tell whether its too weak. And if it is what might be the cause.

Im now starting to thing this is a weak burner pressure problem.
The gas hob appears a bit weak as well.

Is this a problem I can get British Gas to check and fix no-charge.
Could it be their Gas meter and is testing it and fixing it included
in our gas bills.

Steve