forget london
i went to ppl ground studies at white waltham...there is nice guy call bob olson ground instuctor....it friendly school has real charector in berkshire.....ex raf base.it got a nice canteen....all kind of pilots pop in there....do it there...but they only fly in pipier/big chessna...any way go and see...i use to take train from padinngton to maidenhead....then taxi/somebody will pic you you up if are a fulltime student...they have a helicopter school as well, different company..elite helicopters...its nice to get out of london and big air traffic..you dont need that while you starting off.....good luck....