I'm just back from a lovely wedding near Cambridge (congratulations Mr and Mrs Coney!) and chatting to one of the guests about this site she told me what she did for her hen party and it sounded great. 

They went to Vinopolis in central London (the nearest tube is London Bridge) where they enjoyed some wine tasting and also some pampering. Apparently, after enjoying some fizz, there was a room they went into where they all had a manicure.

On researching this, I came across something very exciting! It would appear that Vinopolis offer a butler in the buff package (so to speak!) You can upgrade any hen party to include a 30 minute Prosecco and tapas reception served by your very own "Butler in the Buff". How good does that sound? Bubbles and nibbles served by a fit bloke wearing nothing more than a revealing apron and a bow tie! For more details about their hen party packages check out their website. 

I'm not sure whether they still offer the pampering sessions as this doesn't seem to be mentioned on their website. I've left them a message to give me a call so I will let you know whether this is still an option.