British Standards Institute runs a UK C panel (under IST/5) that sends representatives to the ISO C working group WG14
Phaedrus Systems Technical Director was Convener of the BSI C panel from 2000-2004. In 2007 BSI Suspended the UK BSI C panel. After an abortive restart in 2008 BSI again closed the UK C panel.
The C language has had an intresting history .
Information on the ISO C Standard http://www.iso-9899.info/wiki/The_Standard
The ISO Working Group web site http://www.open-std.org/JTC1/SC22/WG14/
Direct link to C99 +TC1, TC2 TC3 Committee Draft.
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf
The "embedded C" Technical Report which contains a mish-mash of bits of interest to various sectors on the Embedded and DSP market.. However this is not "ISO Embedded C" as some people have tried to sell it http://www.open-std.org/jtc1/sc22/wg14/www/projects#18037
Other TR's of note are
Decimal Maths http://www.open-std.org/jtc1/sc22/wg14/www/projects#24732
Special maths
http://www.open-std.org/jtc1/sc22/wg14/www/projects#24747