Despite the fact that the announcement of a Mary Poppins sequel was met with something of a mixed response, the way the cast has since come together understandably has a lot of people very excited. The latest addition should help ensure that continues being the case, as Bridget Jones’ Baby and Kingsman: The Golden Circle star Colin Firth has joined the sequel.

According to Variety, the British actor will play William Weatherall Wilkins, president of Fidelity Fiduciary Bank. How that will factor into the plot remains to be seen, but what we do know is that Mary Poppins Returns will be set 25 years after the original. Michael (Ben Whishaw) and Jane Banks (Emily Mortimer) will return as adults who get a visit from their old nanny.

She will of course be played by Emily Blunt, while Meryl Streep has been cast as her cousin. Hamilton’s Lin-Manuel Miranda is going to play a street lamplighter named Jack. Rob Marshall is directing, and the screenplay was written by David Magee and is based on P.L. Travers’ books. Marc Shaiman is composing and writing original songs with Scott Wittman.

The cast is coming together well, but we still have quite a long wait before seeing Mary Poppins Returns as it’s currently not set to reach cinemas until December 25th, 2018.