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

Are gambling problems affecting you, or those close to you?
“GamCare is the leading UK provider of free information, advice and support for anyone harmed by gambling.”
https://www.gamcare.org.uk/