Emma Catherwood (born 7 December 1978) is a Welsh actress and former model best known for her role as Jo in My Kingdom and for playing Penny Valentine in Holby City.
In preparation for this role the young actress spent time in Liverpool, where she worked on the accent and visited recovery centres.
For the thriller Spirit Trap Catherwood lost weight and cut a severe fringe to portray the drug abusing, narcissistic character of Adele.
Later, Emma played Dr Penny Valentine in the BBC medical drama series Holby City.
I felt so privileged to be in there with the amazing doctors, who do such a brilliant job... To watch someone crack open a chest is a wonderful experience.