Ralph Topping, chief executive of Britain's biggest bookmaker, said that he understood objections to new betting shops, and backed calls for. William Hill is one of the largest UK bookmakers in the United Kingdom, employing over 17, staff in its 2, betting shops, online, mobile and telephone. Visit your nearest William Hill. As The Home of Betting, William Hill has over 75 years experience and 2, shops across the UK. As well as providing a.