Sister betting sites are bookmakers that operate under the same parent company and gambling licence. For example, Ladbrokes and Coral both operate under a licence held by LC International Ltd.

In order to legally offer online betting to UK punters, betting sites need to hold a licence from the United Kingdom Gambling Commission (UKGC). Many operators run multiple brands under a single licence, creating what are known as sister betting sites.

Sister betting sites that share licences generally share all the same odds, markets, and features as each other (which is good to know when looking for something new).

The most important difference for bettors is how welcome bonuses are treated across each network. Some operators allow only one bonus per player, while others let you claim offers from multiple sister sites.

In the table you will find every major betting network, the brands it operates, and the number of welcome bonuses you can claim..

When it comes to claiming bonuses there are three distinct variants:

• One sports or casino bonus per player
  Some operators restrict players to a single welcome offer across all of their sister betting sites. Once you’ve claimed a bonus from one brand, you won’t be eligible for welcome offers from the others. In these cases, it’s worth comparing the available promotions before signing up.
• One bonus per site
  These networks allow players to claim a welcome offer from each individual betting site. A good example is the LeoVegas Group, where players can claim promotions from brands such as BetMGM, BetUK, LeoVegas and 21.co.uk.
• 5 bonuses per player (across the network)
  ProgressPlay follows a different model, allowing players to claim up to five welcome bonuses across its network of betting sites. Because the allowance is limited, choosing which offers to claim becomes more important.