An offer I can't refuse
It seems quite unlikely that an estate agent would be allowed to convert the launderette, especially if anotherjohn is correct that it should be categorised as A1 (which I think it fair since there is no doubt about dry cleaners). With substantially less than 70% of the shops in the core-shopping area being A1, the loss of A1 to A2 would not be good. I should say the same might apply to a cafe (A3), although I'm sure some cafes manage to avoid this rule through some type of loophole relating to cold food.

The Perry Vale site was granted planning permission for A1/A2/A3/B1, so although a cafe and Fortnum & Masons would have been nice, there is nothing to stop an estate agent creating an attractive frontage in a very prominent spot in Forest Hill on the 'other side' of the station.