I think you need an account to see them, otherwise it will show up as 0 pictures

Don't worry, its free to register, and if you have a Yahoo email that will work as well. If not, just sign up for a "throwaway" email account at Yahoo.
It will probably worth you registering as you might find some of the pictures quite interesting. A few were taken around Liverpool Street Station area and you may well recognise the backdrops.
Here's an example, just to prove there are some photos there. There's 34 quality shots at the moment:
http://static.flickr.com/31/57290706_75bb885005.jpg
I'm very pleased with the sucess of the group. 14 people have joined in just 1 day already, so the pictures are obviously popular