Dear Mr Chianta,
Thank you for your email. This is a rather unusual situation. While the RSPB have received occasional reports of pheasants appearing in north London, these are few and far between. For further information I suggest you contact your closest pheasant breeders, Hawker’s in Essex.
I’m sorry I can’t be of more help and wish you the best of luck.
Fowl and Game Officer, RSPB