Mural that looks like Banksy's artistic signature appeared on Sunday morning near Finsbury Park in the north of the British capital. On Monday morning, the artist finally ended speculation about his possible authorship.

In the new picture, behind a cut-back, bare tree, green paint can be seen on a house wall, reminiscent of foliage. The message of the work is clear, said James Peak, who made a documentary series about Banksy for the British broadcaster BBC. "Nature is fighting and it's up to us to help it grow back," he said.