Difficult question
Have asked the question on the raw feeding list I subscribe too. will let you know if I get any info back.
From my exp I think the numbers are growing in this country but slowly. Sadly You don't see many adverts with bouncy healthy dogs on TV who have just devoured a whole RABBIT (Fur and all)

sadly most peeps still don't believe that you can feed anything raw to a dog esp bones even though most pet shops and supermarkets are now selling bones that are cooked for recreational chewing for dogs /cats