taxes in betting, gambling

General betting duty
http://customs.hmrc.gov.uk/channelsPortalWebApp/channelsPortalWebApp.portal?_nfpb=true&_pageLabel=pageVAT_ShowContent&id=HMCE_CL_000255&propertyType=document#P396_40585

 

Off-track betting
https://en.wikipedia.org/wiki/Off-track_betting