Stumbled across this site by accident and really glad I did as it is a brilliant 2b resource. The cases are excellent with really good descriptions and there are plenty of packets to work through. I particularly liked their interpretation part (which they integrate into their findings) as previously I struggled to write something other than the diagnosis in this box.
The rapids are also more realistic/representative of the exam and not just an eye test!
I highly recommend FRCRlongs to everyone doing the 2b as it is a truly excellent site.