I feel sorry for the guy; we shouldn't have to put up with this just carrying out our jobs. But - I have to agree with noname... he shouldn't have been carrying that amount of cash. He'll prbably find that his Insurance has a cash limit of £100 or if he's really lucky £200.
A little reminder to us all that we do get careless and forget how much cash we actually have on us at one time

I'm reminded of an old guy (sadly no londer with us) who gave me the best bit of advice I ever had when I started Cabbing - carry two cash bags, your genuine one out of site and one filled with a couple of quid of 2p's and some ripped up newspaper; if you get threatened throw the one with the coppers in it out the window and get your foot down. Haven't had to use it but if could buy a valuable few seconds.