He has written a guide for corporate security directors and for those workers who spend a considerable amount of time globetrotting, especially in Muslim countries.
Tethered to a large helium-filled balloon, the 23-pound Sword, as it's known, was able to climb up and down the long cable while workers kept the balloon steady with guide ropes.
Last month, the Lord Chancellor launched a guide for the Parole Board, teachers and social workers on how to apply the laws without endangering public safety.
Britain's Pensions Commission has used a net replacement rate of 80% for workers on average incomes as a rough guide to whether they will have enough to live on in retirement.