Conversation so far:
What type of drama shows did John Barrowman star in?
Titans and Central Park West
What role did John Barrowman play in the soap operas?
Peter Fairchild in Central Park West (1995)
What else did John Barrowman do after starring in the soap operas?
Barrowman then appeared as Peter Williams in Titans (2000).
Did John Barrowman have a successful career in prime time?
he is better known for his acting and presenting work for the BBC that includes his BAFTA Cymru-nominated role of Captain Jack Harkness in the series Doctor Who and Torchwood
What year was John Barrowman BAFTA Cymru-nominated for his role of Captain Jack Harkness?
Captain Jack Harkness in Everything Changes, 2007, BAFTA Cymru Award for Best Actor (Yr Actor Gorau), Nominated
How long did John Barrowman's career last in Prime Time?
Since 2012, Barrowman has portrayed Malcolm Merlyn, one of the main antagonists in The CW series Arrow. Despite announcing in 2017 that he is leaving the television franchise, Barrowman returned

Question: What did he do after leaving Arrowverse?
Self-contained rewrite: What did John Barrowman do after leaving Arrowverse?