- Cormac began volunteering in 2002 at Wapping Volleyball Club becoming Assistant Coach for open sessions 2002-2006 & 2010-2014. Also coached mixed teams.
- London Volleyball Executive Member 2003-2007 and 2014. Founded Whitechapel Volleyball Club and created and managed Foundation League for mixed teams 2003-2006. Co-organiser of London Challenge Volleyball Event held at Crystal Palace in 2006.
- Now Volunteer Co-ordinator for the London Volleyball Association