The London trader accused of contributing to the 2010 flash crash should not be extradited to the US because his actions can not be considered criminal under UK law, a court has heard.

On the second day of a two-day extradition hearing at Westminster Magistrates Court, defence lawyers for Navinder Singh Sarao argued that spoofing - the act of placing trades on an exchange with the intention of cancelling them - was not illegal under English law.