Milner, whose most recent work includes Love Story at Chichester, will play Donna Sheridan's (Triplett's) former lover Sam Carmichael.
The couple met in the late 90s when they were both in Jolson at the Victoria Palace theatre. Triplett was playing Ruby Keeler and Milner was in the chorus.
The production will move from the Prince of Wales on 1 September 2012 to take up its new home at the Novello from 6 September. (See News, 14 October 2011
- Rebecca Hussein