At today's Save EMA demonstration in central London, the police have been handing out leaflets which tell protesters what they can and can't do, or rather what they should and should not do!!

For the first time they are specifying the route of the march as agreed to by the organisers, and caution that "Attempts by demonstrators to deviate from the agreed route may result in officers stopping or slowing the progress of the march".

So there you have it kids.

Thankfully they also say that kettling or containment, "is used as a last resort, when there is serious disorder or to prevent an imminent breach of the peace. The containment will be in place for no longer than is necessary to deal with the issue. The officers will be mindful of your welfare and they will attempt to let you know what is happening and help you get out as soon as is practical."

Phew, that's ok then.

As well as telling people to move away from any disorder and not watch it (kind of like saying - if we start hitting people, don't look at us or take pictures!) they also give advice on how to grass up fellow demonstrators.

The CO11MetPolice twitter account was also sending out links to the pdf of the leaflet in advance of today's protest.

I'm sure we'll be seeing more of this at the big demonstration on Saturday 29th, and for sure probably on the huge TUC demo on 26th March.