The British actor, who portrayed then Prince Charles in the new series, looked to be in high spirits as he beamed at the camera, while he posed of photos at the star-studded event at Theatre Royal Drury Lane in London.
The on-screen star was accompanied by his wife Catherine and the couple’s son Senan West, as the family dressed smartly for the occasion.
Dominic sported a black tuxedo while his other half opted for a more casual look, sporting suede trousers teamed with a white shirt.
The cast member later joined his co-stars including Elizabeth Debicki (played Princess Diana) and Imelda Staunton (played Queen Elizabeth II).
source: express.co.uk