Welcome @Notelongnow and good luck on your search
@Tupster I was in the same position - i.e. only moving because this was my dream house. In a way it makes everything more black and white but I really hope for you that things stay on track - what are the vendors doing?
@Bigbangtheory gaahh these FTB last minute gazundering types... uggh. Again the only upside here is that you actually can't afford to take the hit - therefore it's a hard no and they'll have to absorb it or hold firm themselves. My buyers wanted £30k+ off me, my EA suggested we compromise and try to get some of it off my vendor and 'split the burden'. I refused to pass it on though as didn't think it was fair, and refused to give more than £5k reduction, which was all I could accept. Keeping everything crossed for you.
@Gloriasub all talk of exchange dates came for me via the EA. It's all a bit moot until searches are back and survey results are back (and nobody's trying to get a price reduction). Before that point we all talked around what we would LIKE and what we were aiming for, but I realised that until we reached the point of complete price agreement and being ready to sign the contracts, it was all a bit of a waste of time.