As more information comes in I will add it. Please note this is a live stream so some information may be not borne out as factual as it is investigated.
11:36 AM PT: Apparently the Occupy London camp were occupying a building and the police has declared the building unsafe with the assistance of the fire brigade. Occupiers are sitting in the street and attempting to prevent the eviction.At least four have been reported to be arrested.
11:39 AM PT: From what I have been told so far regarding this Occupation:
New building occupied today Horace, the police are trying to evict and called fire brigade due to smell of diesel
11:43 AM PT: From the livestream:
The building was inspected by the fire brigade the night before the Occupiers moved in and no fire hazard was declared. So there is some evidence that this eviction is not based on a fire hazard but is politically motivated.