Re: 10,500 GBP per day
Believe it or not, but the going rate for an armed bodyguard in London is in the 700 GBP/day range. Note: that is "man licensed and knowledgeable on how to carry and use a gun", not "man with in depth counter surveillance and protective detail experttise", they're a lot more expensive but you wouldn't waste them standing on guard. Get 3 of those with a 4th in rotation, and you (a) save loads of money and (b) give some decent employ to former force members (who otherwise get treated rather shabbily when having to return to civilian life and re-integrate).
That's a quarter of the cost, same coverage. And they have better aim in case he tries to bail too.
Win, win, win..