I have made the Mary Berry cherry cake twice now, the first time I washed the cherries and folded them in (as instructed) and the second time I followed this by coating in flour...Sorry to say the same thing happened! I just think the recipe although makes a delicious cake is too thin to stop the cherries from sinking. next time I'm going to put most of the mixture in the tin and then layer the cherries just underneath the surface(after washing and coating in flour first) failing this there is apparently a fail proof cherry cake recipe on the Delia website!!