Licensed and regulated in Great Britain by the Gambling Commission under account number 57924 for Great Britain customers playing on our online sites. This website is operated by Rank Interactive (Gibraltar) Ltd, a company incorporated in Gibraltar with registered number 120385 with its registered address at Suite 3, 2nd - Floor, Icom House, 1 / 5 Irish Town, Gibraltar GX11 1AA. This is the comprehensive sportsbook review for the online Grosvenor bookmaker. Now fully owned as well as operated by, The Rank Group, the Grosvenor brand is still strongly associated with the United Kingdom and Ireland geographical area of the gambling market, so it so it makes perfect sense that when they decided to diversify from just walk - in - land - based casinos it would not take very much more time until they began to offer and provide their services to the sports betting world online.