Hi there. My husband and I are hoping to buy our first home together. We have an AiP and have made an offer but we are £1,200 short on our deposit. Does the mortgage company need proof of the deposit as soon as you start the application for the mortgage or are we ok to be short as long as we have it (which we will) by the time the money needs to change hands? We are so worried about missing out on this house. Thank you!