I would have said after 4 pm at Ascot today... .....
but if you really want to get some, the best option in the UK is have a plate of zebra - honest! Get it from Osgrow at:
http://www.osgrow.co.uk/index.php?document=6
They'll also flog you some Rattlesnake, Eland, Worm Crisps (?) or Springbok.......
Italy is the main EU consumer of horse meat - remember the recent news story re: horse meat found in salamis? - but all the evidence points to appaling treatmenmt of the horses prior to slaughter including travelling long distances in crowded lorries with no thoughts to the welfare. Bad news for ethical consumers.....
Personally opinion - I'd say avoid it. The best British beef, well hung for 28 days, is going to give you a lot more pleasure than the 'titter factor' of some other meat....if you really have a hankering , go to France and get it there....