Thanks Howard - so the flat and garage are under that one title so if the registered owner has died, and you are the executor, then you can
transfer (assent) the title to the beneficiary using forms AP1, AS1 and ID1/ID3 for each of you as appropriate and submitting them along with a certified copy of the probate
The fee is payable under
Scale 2 on the current market value of the property as a whole, so flat plus garage.
There's no sale/purchase or buyer.