carp farming

Hey group,
I was watchin that channel 4 show, River Cottage - Gone Fishing, with
that presenter, and his name escapes me now.
Anyhow, what he said was you could get these baby carp fishes an put
them in your pond to grow them TO EAT. Mmmm... I wanted to have ago
at
it.

So, where do you get these small carp fishlings from in east of
england? My question to the group
Kleo