Footage of protesters setting fire to a police car in London on Thursday.

The perpetrators, believed to be anti-capitalists, broke away from the Million Mask March earlier in the evening.

Police arrived on the scene within a few minutes, according to the filmer and put out the main fire.

There were no injuries or arrests on the scene, according to the filmer.

However, fifty people were arrested during the march on Thursday which saw crowds gather wearing the "Guy Fawkes" masks of the Anonymous group.