Hi Cliff,
Being based in Bedfordshire then Bill (oapbillf) will be the one to contact. No doubt he will be along shortly.
Dunstable Downs on a Sunday is the best time to expect to meet other Quad line kite fliers. Bill and Graham form a pairs Quad team "Dunstable Downs Old Gents" and I believe still fly there on Sundays from 10am.
It is/was trhe base for the Quad Kite Flying team "The Flying Squad" but I am not sure of their status and how active they are.
The best advice is to meet up and talk, fly with and experience flying in a group. You might try dropping Bill a direct message.
Cheers
Stephen