The short answer is pretty much everything, at least if you like betting on certain sports and games.  William Hill is a major online betting site which has high standards, a professional interface and many offers for punters to take advantage of.

You will immediately see from the homepage that there are distinct sections of the site you can visit.  For example if you want to place a bet or get the latest odds on a particular sport, you can visit the sport section.  Alternatively if you want to have a go at their version of online bingo, look out for the specific link to that section instead.

William Hill also has various games to try out, not to mention their online casino which is packed with casino and table games as well.  They certainly cater for a lot of different punters, and when it comes to welcoming offers they have plenty of these as well.  For instance, the online casino can provide you with as much as £150 as a welcome bonus, although it depends on how much you open your account with as to how much you will receive.

William Hill sometimes has other bonuses and offers as well, so make sure you keep an eye out for these if you have an account with them.  They can add that extra degree of excitement to your time with them, and they might just tip the balance in favour of you joining the site in the first place.