There's an article in the Big Issue this week about some of the laws that can catch people out. Including this:
"Under Section 44 of the Terrorism Act 2000 you can be arrested for taking photographs of police officers or buildings. It's an offence, you see, to photograph something that may be useful to someone committing or preparing to commit an act of terrorism."
People have indeed been arrested for this. That's an awful state of affairs. BUT! In 2009 there were legal challenges, and the Met Police updated their guidelines to clarify that you CAN take photographs of police officers and buildings. The guidance says:
"Officers do not have the power to delete digital images, destroy film or to prevent photography in a public place under either power [Sec 43 or Sec 44]. Equally, officers are also reminded that under these powers they must not access text messages, voicemails or emails." [Source]
However, during a stop-and-search the police can to some extent look at your photos:
"View digital images contained in mobile telephones or cameras carried by a person searched, provided that the viewing is to determine whether the images contained in the camera or mobile telephone are connected with terrorism."
You should watch this amazing short cartoon, from which I learnt about all this: www.actofterrordocumentary.com