If I have a mortgage offer agreed can I then get a different mortgage offer during the conveyancing process? I have a long gap between exchange and completion - maybe three or four months - and I think I can get a better mortgage if I do it after the end of this financial year. But presumably I need to have an offer sorted (it already is) for exchange. It would be with the same lender - I can just get more if I use this current year's accounts - I'm self employed. If anyone knows I'd be really grateful for the head's up. thanks