This is a naive question, but here goes. I want to go with a call-girl, but it's my first time (and I mean my first time), so I'm pretty nervous. Can anyone recommend a sympathetic one in the south-east/London?

You may want to check out Allana, she is actaully in the Manchester area and a veyr HOT lady.  IMHO, it is important for you to see a lady that has been around and will walk you through the paces and make it a awesome experience.

http://www.sweetallana.co.uk/

GirlinDC is a hobbyist.  I'm sure she's not the only one.

I am a guy - I stupidly picked an extremely wussy username. I wanted one that suggested a 'ship of the damned' idea, but the good ones (e.g. FlyingDutchman, JollyRoger) had already gone, so I picked MarieCeleste. That'll teach me to rush into print without thinking it through first.