- Alexa can soon be seen as Sue in comedy-drama Misbehaviour. She also plays young Rosie in MAMMA MIA! HERE WE GO AGAIN, the sequel to the smash hit 2008 movie MAMMA MIA!. Recently Alexa appeared as the lead role in SPACESHIP directed by Alex Taylor and in SENSE OF AN ENDING with Jim Broadbent. She could previously be seen in UK cinemas as Rebecca in A BRILLIANT YOUNG MIND (formally X+Y) directed by Morgan Matthews.