But i beleive there is one for the mortgages - can anybody confirm this - as 3 months interest on a house is a lot.
Definitely is, recently sold my house. But it is three months less the notice time. You give notice on the day you sell, and it takes a few weeks (if you are lucky) to register/transfer in any event.
I ended up paying 7 days' penalty interest (the difference between 3 months and the time it took from giving notice to the day transfer took place).