Police were tonight forced to lock the doors to Parliament after protesters attempted to force their way into the Palace of Westminster.
Scotland Yard said none of the environmental demonstrators, campaigning against airport expansion, had managed to breach security.
There was one confirmed arrest – of a 23-year-old woman for breach of bail.
A spokesman said an "appropriate poli
cing plan" had been put in place to deal with the protest, which had been expected.
Met Police Inspector Tim Barfoot, who was on the scene, said: "The situation is being dealt with. We are concerned to ensure the effective running of Parliament."
Asked whether any protesters were able to get in to the Palace, he said: "No, we were able to deal with the situation."
There had been a larger than usual police presence at Westminster throughout the afternoon in readiness for the protest.
Doors at the main St Stephen's entrance were closed and secured with two large metal bars, with the hammering of protesters clearly audible from the inside.
The latest attempt to breach security comes months after the anti-aviation group Plane Stupid gained access to the roof of Parliament, unfurling banners and chaining themselves to the historic building.
The full article contains 210 words and appears in The Scotsman newspaper.
