I'm only posting this because Rebecca's question is in the FAQ Damp thread, and may therefore be overlooked.
She needs to find a proper damp specialist to help her convince her mortgage company that her house doesn't need invasive damp treatment (because it doesn't sound as though there's any damp to treat).
She needs to find a proper damp specialist to help her convince her mortgage company that her house doesn't need invasive damp treatment (because it doesn't sound as though there's any damp to treat).