On Saturday 2nd December I'll be joining a BAE systems team of more than 70 people to run the eight-mile GRIM Challenge. 

It'll be icy, muddy and wet and it will be a real test of our mental and physical toughness.

Through our efforts at this event we'll be supporting a charity that supports our ex-servicemen and women by treating a range of mental health conditions including PTSD, depression and anxiety. Combat Stress is the UK's leading veterans' mental health charity.

Please dig deep to help me raise money for this wonderful cause. BAE Systems will match, pound-for-pound whatever the team raises.