Lots of snuggly hand-made things - mine love the bunk-bed in particular. They also loved the rat house - so much so we couldn't get them out of it! (hmm...) 

Have recently added an excellent 'health' section with lots of supplements and even a cook-book for rats! (Human supervision recommended)

Another place to buy loads of things for ratties - handmade hammocks and even home-baked treats!

The National Fancy Rat Society (NFRS)
The main rat society in the UK. Includes details of shows and general rat information.

Fancy Rats forum
Really active online forum, with loads of advice

The World Society for the Protection of Animals. Support campaigns against cruelty and neglect worldwide, including in warzones.
Any money given for baby rats will go to this charity.