Pam St Clement, Age 78 – EastEnders
She started portraying Pat on EastEnders back in 1986, and Pam St Clement went on to do so until 2012. She was about to turn 70 years old at the time. Four years later, she went back on set for a single episode. Today, Pam has been in over 2,500 episodes of the show.
Although her collaboration with the series has come to an end, Pam is still very much out there. The last time she acted was in 2017 with a couple of episodes on Casualty. The last time we saw her on TV, though, was in 2020 when she appeared on an episode of This Morning.