Environmental protesters taking part in a mass protest camp in London will be photographed by police as they arrive, officers have confirmed.
Up to 3,000 people are expected to join the week-long Climate Camp to protest against the institutions and industries they believe are causing global warming.
Protesters will gather at six points across London including the headquarters of BP and Shell and the Bank of England before "swooping" on an undisclosed location.
The exact site of the camp remains a closely-guarded secret until the last minute, although it is widely thought to be a "grassy area" somewhere in East London.
Police will be present at every swoop location and have brought in extra officers to ensure there are around 500 police on the campsite everyday.
