
The AGM approved the AGA-style rules with no opposition by the AGM on 5th April 2008. The statement of the Go rules used in BGA tournaments is found in Rules of Play [1]. This document is inspired by the AGA's official statement of the rules [2] and the BGA'S interpretation [3] of those rules.
Tournament organisers can get an easy to digest statement of the rules in the AGA Summary [4] to print out for display.
Players can get a crib sheet showing guidance in playing by AGA-style rules from Short Guide [5].
BGA referees should refer to Rules of Play [1] for the definitive statement of BGA tournament rules of play.
Links:
[1] http://www.britgo.org/files/rules/rulesofplay.pdf
[2] http://www.usgo.org/resources/downloads/completerules.pdf
[3] http://www.britgo.org/rules/bgainterpretation.html
[4] http://www.britgo.org/files/rules/agasummary.pdf
[5] http://www.britgo.org/files/rules/agaguide.pdf