I've done these parties before. As I was new to them and they get a lot of drop outs on the day, they've had to start asking for deposits. Regulars I believe do not have to pay the £100.
They only do it because they advertise a line up of girls and they book no more than 2 guys to each girl. So if guys don't turn up then girls have to be sent away and not paid which is not good for everyone involved.
Paid my £100 deposit by Paypal and paid the rest in person at the party.
If you're not sure if it's the genuine Cambridge Parties or Sexy Soiree Parties Adultwork site, Google their twitter page and click on the link from there. All the party girls they use follow and regularly tweet/advertise the parties so no scam going on, but as I say it's best to click from their twitter link as anyone could technically set up a AW page with the same name.
Oh, and they are bloody good parties and value for money. As ratio is 2 guys to 1 girl you are guaranteed a hole for the whole 2.5 hours. Individually you'd be talking at least £150/hour per girl to see them individually. Hope this helps!
