Jude Law joins Greenpeace protest in London

Protests are taking place in cities around the world in response to the detention of 30 Greenpeace activists in Russia.

The organisation has called for a day of "global solidarity" for the activists, who were charged after a protest at a Russian oil platform in the Arctic.

The entire crew of 30 on board the Arctic Sunrise, from which the protest was launched, have been charged with piracy. Six of the crew are from the UK.

Actor Jude Law is a supporter of Greenpeace and knows one of the detained men, logistics co-ordinator Frank Hewetson. He spoke to the BBC's Sarah Campbell at a protest outside the Russian embassy in London.