Think this is a simple question but for some reason I can't find the answer online.
If you agree to a mortgage offer, are you obliged to use it when you actually get to the point of paying for the house?
I know offers are usually valid for six months, and it'll probably take 4-5 months to complete. During this time, it's possible that better deals will come on the market.
If we agree to an offer with one lender now, is there anything to stop us withdrawing and getting a new offer in a few months if rates improve? (Lol, but we can dream!)