Published Tuesday, 07 August 2012
The Absolutely Fabulous star competed professionally as a young girl, but quit the sport and has steered clear of riding ever since.
Now she is preparing to take part in the annual Badminton Horse Trials for a new TV documentary, called Back In The Saddle, and the actress is worried she may end up severely injured.
She says, "I'm terrified. I'm absolutely terrified. I really don't want to fall off, that's my biggest thing.
"You get to a point in your life where you can imagine how much that's going to hurt and how many bones will snap - they're probably all made of powder now."