He then entered a relationship with his office manager , Emma Beal ; they have two children together : Thomas , born 14 December 2002 at the University College Hospital , London , and a daughter , Mia , born on 20 March 2004 at the Royal Free Hospital in Hampstead .
Livingstone and his current partner Emma Beal , also his office manager , have a son , Thomas , born 14 December 2002 at the University College Hospital , London , and a daughter , Mia , born on 20 March 2004 at the Royal Free Hospital in Hampstead .