Where could I purchase fantail pigeons around Bedfordshire area, and gain...

[biffymcliffy]

...knowlage of housing and care? I'm really interested in getting a pair of fantail pigeons, I am having trouble finding some "within reach", i have googled it for a while now, also I would like to know about housing them, we have a good "aviary" type form of cage (an ex guinea-pig run, plenty high enough), but what form of cage do i put inside?