First : If you haven't seen a mortgage advisor for a month - go and see one again. The rules have changed massively and it's not necessarily the case that what was true a month ago is still true now.
With that handled, buy something, let it go through with the lawyers, don't give notice on your rented place until your purchase has exchanged contracts. Better to have a two week overlap and waste a bit of rent than to give notice early and potentially have something go wrong that means you can't move into your purchase and you're homeless.
First : If you haven't seen a mortgage advisor for a month - go and see one again. The rules have changed massively and it's not necessarily the case that what was true a month ago is still true now.
With that handled, buy something, let it go through with the lawyers, don't give notice on your rented place until your purchase has exchanged contracts. Better to have a two week overlap and waste a bit of rent than to give notice early and potentially have something go wrong that means you can't move into your purchase and you're homeless.