This week the Metropolitan Police has launched a new anti-terrorist campaign.

Metropolitan Police Terror Poster
Don’t rely on others. If you suspect it report it.
Londoners are being asked to trust their instincts and report suspicious behaviour to help combat terrorist activity.
Just one piece of information could be vital in helping disrupt terrorist planning and, in turn, save lives.
This national publicity campaign across England and Wales raises awareness of the Anti-Terrorist Hotline and gives the public examples of suspicious activity and behaviour. The public are encouraged to trust their instincts and report anything confidentially to the Anti-Terrorist Hotline, where specialist officers will take their call.
This campaign utilises London specific media: radio and press, posters at tube and rail stations. As part of the national campaign there will also be national press and national commercial radio advertising, large outdoor posters and advertising on the rears of buses. To ensure the campaign reaches minority communities, there will also be advertising in minority media press titles.
Press advertising will appear in national newspapers and on main commercial radio stations. In London, this includes the Evening Standard, Magic, Heart, Total LBC, Smooth and Capital FM.
The press ads seek to raise awareness of some of the items/activities which may be needed by, or be of use to, terrorists. It asks the public to consider whether they have seen any activity connected with them which may have made them suspicious.

Metropolitan Police Terror Poster
So don’t go looking at CCTV camera’s, creosote your fence or any number of DIY projects, otherwise you could find yourself spending an uncomfortable amount of time with MI5 officers. This is madness, most police officers could not spot terrorist activity and as Watching them watching us at Liberal Conspiracy writes:
There is no evidence that any Islamic extremist or Irish terrorists or Animal Rights extremists or neo-Nazi extremists, who have exploded, or tried to explode bombs, or set off incendiary devices, have been deterred from doing so by the presence of CCTV cameras. Some may have been tracked down partially through the help of CCTV footage, after their attacks or attempted attacks, but that is not what this poster is implying.
There is no evidence that any of them who have actually had access to any explosives, have ever been caught in the act of “terrorist reconnaissance” of CCTV cameras, neither by members of the public (which is what this poster misleadingly claims), nor by regular Police street patrols, nor even by any covert surveillance of known suspects.
This will be a waste of time and money – all the campaign will achieve is a climate of fear; maybe that’s the point. The whole thing smacks of something more akin to Soviet era Russia and the KGB in which neighbour spies on neighbour.