I was looking into the parrot society uk page and I found some avian vets in norfolk area they may know where to get a CAG. If not London is not so far. Where are you based? I been once in Sheringham lovely town.
Avian Vets in Norfolk
Companion Care Veterinary Surgery
Pets at Home
Sprowston Retail Park
Salhouse Road
Norwich, Norfolk
NR7 9AZ
Tel: 01603 484359
Louise.J.Rayment, BVetMed, MRCVS.
Westover Veterinary Centre
40 Yarmouth Road
North Walsham
Norfolk
NR28 9AT
Tel:01603 403202
Grove Veterinary Group
17, Lynn Street
Swaffham
Norfolk
Tel: 01328 862137
All Creatures Healthcare Ltd
Brackenwood
Sandy Lane
Horseford
Norwich
Norfolk
NR10 3EB
Tel: 01603 898984 / 01603 920286
5 year old CAG GIZMO
4 year old DYHA RIO
2 year old YELLOW NAPE RUBY
4 month old greenwing macaw Myha
2 year old CAG ROXY
12 year old rescue CAG MARLEY
15 year old rescue CAG SMOKEY