For the Olympic Games, Northern Irish swimmers may opt to compete for Aquatics GB.

Aquatics GB is a member of World Aquatics, LEN, the British Olympic Association and the British Paralympic Association, and has responsibility for elite performance, doping control and international relationships and events for the sports within Great Britain.

The Aquatics GB Short Course Championships were usually held in August or September each year, though the event has not been held since 2004 Domestic water polo competition in the UK is centred on the National Water Polo League (NWPL) and National Women's Water Polo League (NWWPL), which operate through the autumn and winter.

In 2009, Aquatics GB announced a £15 million, 6 year sponsorship deal with British Gas.

In 2016, Aquatics GB announced a new sponsorship deal with TYR Sport, Inc. Keil, Ian/Wix, Don, In the Swim.