I'm going to invest in a digital SLR soon, but just a plain old Sony cybershot p73. For most of the photos it decided to use the flash :/ 4mpixel, optical quality isn't that great, no filters allowed.
The extra resolution power would be nice, currently everything is on natural light with the program mode of my camera's slightly orange cast. You wouldn't expect 6:30 am light to give a sunset effect.
I had an film SLR with me also, which should have taken gorgeous pictures, but I won't know till I develop it. What bothers me is that the camera was put through an xray machine at the entrance of the tower I am working :/ Pwned film.
Theres more photos at Cliff's london Photos