Julia Joyce has played the younger character of two of Billie Piper roles. Here in "Mansfield Park" and also in the "Doctor Who" episode "Father's Day."
Hayley Atwell and James D'Arcy are both members of the MCU and played opposite each other in the TV series "Agent Carter."
Billie Piper and Jemma Redgrave later worked alongside each other in the Doctor Who 50th Anniversary Episode, "Day of the Doctor" (2013).
Billie Piper, Julia Joyce, Michelle Ryan and Jemma Redgrave have all been in "Doctor Who."
Billie Piper and Hayley Atwell previously worked together on the Sally Lockhart mysteries, The Ruby in the Smoke and The Shadow in the North.