David Tennant
Tennant is perhaps most known for his work as the Doctor in the critically acclaimed Dr Who series, portraying the role from between 2005-10. He has since gone on to have a successful tv career, having starred as DI Alec Hardy in the ITV series Broadchurch which he played from 2013-2017. Tennant has also had some recognition for his film career, most notably for portraying Barty Crouch Jr. in the internationally loved Harry Potter and the Goblet of Fire (2005).
Patrick Stewart
Stewart is perhaps one of the most prominent British actors of all time, having started his career in theatre, working for the Royal Shakespeare Company, to starring in major Hollywood blockbusters. He is perhaps most known for his role as Captain Picard in the Star Trek: Next Generation tv series (1987-1994), a role he has picked up again since 2020, but known as Star Trek: Picard. He is also known for his role of Dr Charles Xavier in the X-Men series (2000-2006).
Penny Downie
Downie is an Australian actress who no longer has much of a movie presence, preferring to take on TV roles instead. She has most recently starred in the BBC Downton Abbey series (2014) as Lady Sinderby and as the Duchess of Gloucester, in The Crown (2019).