I don't know how reliable is this site, but the event is real and some people tweeted about Rob being there. Take it as you wish. He was attending a charity event. .
ETA: Another twitter
Robert Pattinson turned up in Camden last night to show his support for a fundraising event held for the Chelsea College of Art and Design.
The event was held at Proud Camden a unique live music venue. R-Pattz was seen dancing and cheering on the bands and paid special attention to the burlesque girls, who put on a provocative performance in honour of their special guest.
Sadly for the female guests R-Pattz night came to an abrupt end when a guest DJ announced to the crowd that the Twilight star was there prompting R-Pattz to make a quick exit.