Laila Morse is 81 years old, and the family link behind her long run as Mo Harris on EastEnders is even bigger than many viewers realise. She is Gary Oldman’s older sister, with 13 years between them.
That gap matters less than the careers it connects: Morse has played Big Mo in the soap since 2000, while Oldman built a film career that took him to an Oscar for Sir Winston Churchill in Darkest Hour. The contrast is the point — one sibling built a long television identity, the other became a global film name.
Maureen Lesley Oldman to Laila Morse
Morse was born Maureen Lesley Oldman, and her stage name came as she moved further into the limelight. The name is believed to be an anagram of Italian for my sister, and reports suggest Isabella Rossellini suggested it.
She first joined EastEnders in 2000 and has been best known for portraying Mo Harris, also called Big Mo. For viewers, that means one character has carried her screen identity for over two decades, long enough for the role to become part of the show’s everyday fabric rather than a short-term booking.
Gary Oldman, Los Angeles, and Nill by Mouth
Gary Oldman helped launch her career when she appeared in his directorial debut film Nill by Mouth in 1997. That film was set in Southeast London and was inspired by their working-class beginnings, which gives the pair’s split screen careers a shared origin before they headed in different directions.
Oldman has lived in Los Angeles since the early 1990s, but the family connection stayed public in a very different way. He has won a Golden Globe Award and three BAFTAs, yet the sibling link has remained a point of curiosity because it cuts across two separate entertainment lanes: film prestige on one side, soap recognition on the other.
Esquire, 2011, and street attention
In 2011, Oldman told Esquire magazine that his soap star sister got more attention in the street from fans than he did. “I would think Maureen would (get more attention). It’s weird it comes in waves. Overall I enjoy a certain anonymity. I live a very normal, very ordinary life.”
That line still explains why the story travels: fame is not always proportional to awards, and a household name in one format can outdraw an Oscar winner in another. For readers, the practical takeaway is simple — Laila Morse is not just the face of Big Mo, she is part of the same family as Gary Oldman, with Leonard Bertram Oldman and Kathleen Oldman as their parents.
