The National Pigeon Association is the governing body of fancy pigeons in the United Kingdom. They issue closed year rings each breeding season from January until the end of July and also have a book of Standards which breeders and judges use towards the ideal pigeon of that breed.

Please see below (by courtesy of National Pigeon Association all rights reserved) a selection from the complete book which covers three sections Fancy breeds, Flying breeds and Blowers (Pouters).