Snout. [as Wall] Thus have I, Wall, my part discharged so; And, being done, thus Wall away doth go.
A Midsummer Night's Dream : W Shakspeare.

James Bridle of New Aesthetic and Drone Drawing fame goes on a walk. He follows the edges of the London Congestion Zone, documenting some of the CCTV cameras he sees. The edge of the congestion zone is the 3rd wall around the city. The first being the Roman City Wall, the second is the anti-IRA Ring of Steel. It's the first wall that is largely virtual consisting principally of ANPR  cameras.
http://shorttermmemoryloss.com/nor/2014/11/07/all-cameras-are-police-cameras/

In Park Lane, he was accosted by a pair of security guards who performed a citizen's arrest and held him until the Police turned up. "When they arrived, the police officers explained that carrying a camera in the vicinity of Central London was grounds for suspicion."

This reminded me of a London Met and Transport Police campaign. 
http://content.met.police.uk/Campaign/counterterrorism2009

A key part of that was a poster campaign http://voidstar.com/images/cctv.jpg "A bomb won't go off here because weeks before a shopper reported someone studying the CCTV cameras.", "Don't rely on others. If you suspect it, report it". This scary bit of Orwellian double speak prompted an Internet meme generator long since gone. The phrase "don't rely on others" prompted me to mash the image up with some Hawkwind lyrics from Sonic Attack. "Think only of yourselves"   http://voidstar.com/images/sonic_attack.jpg The message is clear though. Only look at CCTV cameras out of the corner of your eye because if you pay too much attention to them, you'll be suspected of harbouring thoughts of terrorism.

But then there's London Transport's posters. http://www.yourlocalguardian.co.uk/yoursay/schools/10148054.ORWELLIAN_STYLE_TRANSPORT_FOR_LONDON_POSTERS__A_HUMOUROUS_SATIRE_OR_SUBTLE_HINTS_OF_TOTALITARIANISM_/ This all begins to get scarily post modern. Is this some hipster designer taking the piss out of their brief and sneaking it past some middle management sign off? Or is it doubleplus-good propaganda that works better at inserting the idea into our brain because we laugh at it.

James Bridle can be found here.
http://new-aesthetic.tumblr.com/
http://booktwo.org/