Brzezicki is the son of a Polish warveteran and an English mother. Brzezicki left Big Country in July 1989, but rejoined in 1993. Together with Butler, now on lead vocals, and guitaristBruce Watson, Big Country started gigging again in 2007, as part of their 25th anniversary tour.
On 10 October 2009, Mark Brzezicki re-joined The Cult onstage at the Royal Albert Hall, London. He joined original members Ian Astbury, Billy Duffy and Jamie Stewart, with whom he had recorded the Love album, to perform "The Phoenix" and "She Sells Sanctuary" as a second and final encore to a live performance of their 1985 album Love.