There are several cat breeds that are ALWAYS grey (called 'blue' by breeders.) These are the Russian Blue cat, the Chartreaux cat[?] and the Korat cat[?].
... Life[?] Northampton Central Museum & Art Gallery[?] Norfolk Bressingham Steam Museum[?] East Anglia Railway Museum[?] Strumpshaw Hall Steam Museum[?] Toad Hol ...