Gillian Anderson and Peter Morgan have called it quits after four years of dating.
The Emmy-winning actress, 52, and the creator of The Crown, 57, have amicably split, according to a report from U.K. columnist Baz Bamigboye of the Daily Mail. According to Bamigboye, Anderson and Morgan began dating back in 2016, though the former couple never moved in together.
A source tells PEOPLE that the pair — who worked together on the recent season of the Netflix royals series, as Anderson portrayed British Prime Minister Margaret Thatcher — have “highly-demanding schedules.”
A rep for Anderson declined to comment on the actress’ personal life. Morgan’s rep also declined to comment.
Anderson split from first husband Clyde Klotz — with whom she shares daughter Piper, 26 — in 1997, and from second husband Julian Ozanne in 2006. The Sex Education actress was later with Mark Griffiths from 2006 to 2015. They have two children, sons Oscar, 14, and Felix, 12.
Morgan has five children from a previous marriage.