We are finding the purchase of our new home by porting our existing mortgage and taking out a further mortgage amount, both through our existing provider. Buyer threatened to pull out so it's looking likely that we'll need to complete our sale before our purchase. Can we do this if we're porting part of the mortgage?! Such a stressful time! Does anyone have any experience of this? We've asked our solicitor but will have to wait to hear back on Monday and thought I'd see if the wisdom of mumsnet could help me out.