The External Relations Committee [1] is the committee tasked with publicising the BGA and developing with its relation with the press, and helping clubs and members in their Go publicity.
The linked pages contain material to assist with the creation of press releases and other publicity material, especially in Britain.
The BGA also is represented from time to time at appropriate exhibitions and fairs.
The BGA maintains an archive of books, magazines and publicity material.
Links:
[1] http://britgo.org/committee/external
[2] http://britgo.org/history/media.html
[3] http://britgo.org/general/celeb
[4] http://britgo.org/press/pictures.html
[5] http://britgo.org/press/faq.html
[6] http://britgo.org/press/samples.html
[7] http://britgo.org/history/archive.html