This is why I love NSC; there's a hell of a lot of helpful information here. Thanks everyone.
The Original - I've just given them a call, thank you.
solly - thanks for that advice. We've no TVs in any bedrooms but with a three year old and two twin babies we are putting more washing on...
No, I'm not talking about the contents of Ernest's pants, but sadly some of our walls.
We have a real condensation problem each and every morning and evening; we have to use a window vacuum emptying it about four times as we go around the house.
However, we can now see patches of mould appear...