i was wondering when this question was gonna come up.
camden market. the old bloke who was moved from the stables to another part of the market, his stool has loads of toys but its very expensive, you'll pay £95 for a loose complete luke stomtrooper, he also had imperial transport boxed for £195!!! if you get the chance go and an have a look as he wont be there very much longer, spoke to him last week and he's had enough.
modellers loft: (caterham) takes about 30 mins on the train from victoria i think, great place this but also a bit pricey, tons of vintage star wars last time i was there, rows an rows of figures on display, i bought a loose landspeeder for £10 but he wanted £60 for a loose crappy condition creature cantina. also if you collect other vintage toys then you'll love it here, i spent an hour lookin.
alfies antiques market: (edgware road bakerloo line) i have a feelin this bloke has finally gone, he had a small stool lots of vintage star wars but again pricey £15 for a loose greedo, i believe michael jackson went and bought planet of the apes figure of this bloke around 1999.
model shop uxbridge: sadly the owner of this place has passed away, he had lots of loose figures reasonbly priced, i got a barada for £7 off him.
mimi fifi (notting hill gate) another pricey toy shop lots of betty boop stuff, ask inside to see there vintage star wars and they will reveal a shoe box of over priced figures gamorrean guard was £15 i think.
never heard of that retroman that someone said?
i dont know of any other places in london but if you hear of any let me know please.
hope this helps.