Mmmm............

[punterminator]

Awww sorry man - better your bubble burst now though and not after an expensive flight

[hp2685]

there's a few pretty decent agency sites for london. tried out a few of them and so far i haven't been disappointed. pics were genuine and everything was great.
i was left disappointed with the independent ones i looked up on 2 occasions. i'd say in london agencies are the safest way to go. you can get brilliant punts for £150 over there (less than the €250 normal rate in dublin).
they usually text you the correct adress, so there's less confusion. and if you get lost just ask a taximan. they know every little corner in london.
then again here on this site i'd say the safest bet is looking up independents who've been reviewed a lot. had a couple of big disappointments in dublin, but most of the time i've been lucky and got my money's worth.
if you want me to pass you on a couple of london contacts just pm me. happy to help out.