The mother of the British computer hacker Gary McKinnon says it is "wonderful" his case has been raised by the prime minister during talks with the US president.

Janis Sharp told BBC Radio 5 live Breakfast that "Obama smiled and at the end actually said that they're hoping to find a way that is appropriate to get through this".

She said Mr McKinnon, who is accused of hacking US military computer systems, was "scared to hope".