Can the British military be used against the British people?

London 2012: 13,500 troops to provide Olympic security

Up to 13,500 military personnel will help to provide security at the London 2012 Olympic Games, the Ministry of Defence has announced.
Security would be police-led but the military would make a "significant contribution", the MoD said.

I find it a concern that the military will be used as security against the British public. It appears they will be heavily armed too.

The defence secretary also said the military would be using its full range of capabilities and equipment to "keep London safe during the Olympics".
He added: "Military hardware will be used, we'll be deploying helicopters, we'll be deploying Typhoon fighters to defend London's airspace, we'll be deploying ground-to-air missile systems."

Is there no equivilant of Posse Comitatus in England? Not that it's looking like it will be around for much longer in America though.

“Someone who has guns, someone who has ammunition that is weatherproofed, someone who has 7 days of food in their house” could be treated as a potential terrorist and be subject to indefinite military detention, warned freshman Senator Rand Paul (R-Kentucky) in a detailed and impassioned speech to the Senate opposing S.1867, the National Defense Authorization Act (NDAA). Section 1031 of that measure allows the indefinite military detention of any individual – including a U.S. citizen – who is designated a suspected terrorist or “unlawful combatant.” As Senator Paul pointed out, existing laws and official policy guidelines are replete with open-ended definitions under which law-abiding U.S. citizens could be regarded as actual or potential terrorists. (link)

Many people are preparing for a harsh future. We're seeing fiancial meltdowns, civil unrest and a general mistrust in / apathy towards the ruling classes.

They in turn are making thier own preparations for the day when the people tell them they are no longer wanted.

Military control of the population won't be accepted without question through legislation like the Civil Contingencies act or the National Defence Authorisation act. It has to be seen as normal and non theatening. It has to be introduced slowly, say by having the miltary run security at an extremely high profile event.

They will only be there to protect against terrorist threats of course. I'm sure British soldiers won't be checking attendees for beer, fags and products that aren't sold by official sponsors will they?

"They'll be working with civilians in mixed teams, searching and checking people going into the stadiums, making sure - airline style - that nothing that shouldn't get in there gets in."

When the trouble comes, the Governments of the West will have everything in place to easily declare martial law and control the population through the military.

The only question that remains is, will the army side with the six hundred or with the six million?