Okay pony I have a formal recommendation for ya, but we can't remember the name of it sorry
Here are our combined directions, make of them what you will!
Basically if you get off the Northern Line at Clapham Common tube station, cross the road to the north and walk about 30 seconds along "The Pavement" (name of the street) back towards the Common, there are a couple of hairdresser shops on your right.
The one with lots of huge round white chinese lanterns hanging everywhere inside is the one you want, you can't miss them through the window. The recommended hairdresser is Amanda, if she's still there.
Sorry I don't have the name of the place, but you can probably do a Google or Scoot or upmystreet.co.uk search on Hairdressers on The Pavement, Clapham Common and find it fairly easily, just ring and ask if they have the lanterns!!
Buena Suerte!! (Good luck)
let us know how you get on