Police investigating the grisly murder of a soldier in London by two radical Islamists have made another arrest.

An anti-terrorism unit is investigating the stabbing of a French soldier that police think was inspired by the killing of a British soldier in London.

Counterterrorism police have questioned Abu Nusaybah, a friend of one of two suspects in the killing of a British soldier, after a BBC interview.

The woman who gave two bloodied knifemen a stern talking to has been hailed as a hero for embodying the "spirit of London".