Lady Thaw is a fictional character portrayed by Thelma Barlow in the TV series Doctor Who.
In the first episode they appeared in, titled The Lazarus Experiment (season 3), they were 78 years old.
They appear in 1 episodes out of a total of 166 aired
Episodes1
The Lazarus Experiment
episode S3.E6 august 2007The famous Dr Lazarus has appeared to discover the secret of eternal youth - but do his experiments hide a sinister secret?