Could British troops lose it during the Olympics?

Could so many thousands of bored, disgruntled, underpaid, demotivated, full of grudge, envy and hate, Army, RAF Regiment and Royal Navy troops compressed in to East London actually result in a mutiny during the Olympic Games, something akin to the Invergordon Mutiny? If a charismatic enough British regimental colonel (remember Gadaffi), or even a lieutenant (remember Rawlings), or even a sergeant (remember Idi Amin) emerged, I can yet see a 'coup' in the UK, with the Houses of Paliament being siezed by between 20 up to 1000 fractious British troops, as in the film "V for Vendetta". I bet you that just like in Northern Ireland, troops with firearms in London have been issued with no more than 5 live rounds each! Or maybe like the Busbeed guards at Buckingham Palace, with just one round each! And that the Leytonstone Rapier batteries have only one live missile! Although I am reminded of the episode of Citizen Smith when Wolfy stormed parliament in a nicked Scimitar only to find it was the summer recess!