Goes by the name of 'Ade2209' on adultwork. He did this to me and i thought nothing of it. But then he did the exact same thing to a friend. Sends a few emails enquiring about an outcall to his place in Tower Bridge. If you agree to a time, he'll tell you that he will call you later with the exact details but instead will send you one message after the other pushing the time back further and further saying he's attending drinks/dinner with work colleagues until eventually he says "Oh i guess its too late now"...