- Las Vegas, Nevada, US
William Hill PLC is one of the world's leading betting and gaming companies, employing over 12,500 people. Its origins are in the UK where it was founded in 1934. In 2012, it established William Hill US with a focus on retail and mobile operations in Nevada. Now, that's the largest sports betting business in the USA. William Hill US (www.williamhill.us) currently operates 113 race and sports books in Nevada. The company also operates in New Jersey, Indiana, West Virginia, Iowa, Florida, Mississippi, New Mexico, Delaware and Rhode Island.