British Isles Bowls Council (BIBC)
The British Isles Bowls Council was formed in 1963, by four of the home countries, England, Ireland, Scotland and Wales.
International Series
The International Series has been played since 1903, the first being held in London, England. The series consist of 24 players (6 rinks of 4 players with 2 bowls each) playing each other country, each rink playing 21 ends. The country with the highest shots after each match receives 2 points or 1 point for a match draw. The International Series name was changed to the Senior International Series, when the Junior International Series were introduced in 1992. The Series is played annually rotating between England, Ireland, Scotland and Wales.
The Junior International Series was introduced in 1992, with the first series being played in Carlisle, England. The Junior Series is played annually rotating between England, Ireland, Scotland and Wales.
British Isles Championships
The British Isles Championships began in 1959, with the national champions of England, Ireland, Scotland and Wales. The British Isles Championships is an annual knockout competition.
Singles (4 bowls each) first player to reach 21 shots
Pairs (4 bowls each) highest score after 21 ends (or additional ends until there is a clear winner)
Triples (3 bowls each) highest score after 18 ends (or additional ends until there is a clear winner)
Fours (2 bowls each) highest score after 21 ends (or additional ends until there is a clear winner)
Junior Singles U25 (4 bowls each) first player to reach 21 shots
In 2012 the Senior Fours knockout was introduced
Senior Fours (2 bowls each) highest score after 21 ends (or additional ends until there is a clear winner)
In 2016 an Under 18 singles was introduced:
Youth Singles (4 bowls each) first player to 21 shots
The Natwest Trophy was introduced in the year 2000 for the country winning the most number of championship points from 6 events, 4 points for winning a trophy, 2 points for runner-up.
Channel Islands
In 1995 the Channel Islands was introduced in both the Senior International Series and British Isles Championships. In 2003 the Channel Islands withdraw from the International Series, with Guernsey and Jersey being introduced separately into the British Isles Championships the same year.