Downton Abbey star Laura Carmichael, who plays Lady Edith, is making her West End debut alongside Anna Friel in a production of Uncle Vanya at the Vaudeville Theatre.
Our correspondent Lucrezia Millarini went along to meet her:
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But while he wasn't showing it, PC Tyler O'Hare was enjoying every minute of it.
The suffragist leader has been immortalised in bronze in Parliament Square.
Commuters could be caught out by the alterations which will see many existing trains leaving stations up to two minutes early.