I'm a member of the London Photographic Meetup Group, who organise regular get togethers in and around London to take photos and visit pubs - think of them as pub crawls with cameras! Since it was started in 2006, the LPMG has gone from strength to strength and boasts a huge and active membership. The events are organised through their group on meetup.com, and they are probably one of the biggest and best organised UK groups on that site, due to the hard work put in by Tom and his group of organisers.

For landscape photography, The Luminous Landscape is a great source of information

Net-model is the source of most of the models I've worked with. I also have a portfolio on Net-Model as seanb

I'm a member of the Guild of Erotic Artists, and regularly attend their monthly open days in St. Albans.