Diana Rigg was 82 in Last Night in Soho when she played the character 'Ms. Collins'.
That was over 3 years ago in 2021.
In 2020 she died aged 82, starring in 49 films in her career, 0 of those after Last Night in Soho was first released. If she were alive today she would be 85.
In Last Night in Soho, I think Diana Rigg looks: