I've just spoken to my mortgage lender to see whether they will be able to release the funds for my mortgage on Thursday as requested. By calling and making the customer services bloke pull up my details, their system has made the connection between the last documentation they needed and this morning post and Thursday for the funds is apparantly now confirmed.

Which means... it's only the sellers changing thier minds that can cause this to fall apart now.

I can get finding some broadband and contents insurance now. :D