The UK association for exclusively full-time professional photographers:

The Master Photographers Association

Beautiful hand-made albums from:
Versatile Albums

Great photographic prints from Neil at:
CPL Graphics

Super preview books:
Simm2000

Quality disc printing:
CD Team

Lovely fresh flowers:
Stemtation

The best camera and lens reviews at:
DP Review

Day out in London:

The Photographers Gallery

The National Portrait Gallery

Tate Modern