David Cameron in Japan at start of UK trade tour of Asia

The prime minister has visited Tokyo, Japan, on the first stop of a visit to East and South East Asia aimed at encouraging trade deals with the UK.

David Cameron is expected to agree a new defence deal with Japan which would see both countries develop weapons together for the first time.

He said it was part of his job to "load up an aeroplane full of business people" to "fly the flag for Britain".

James Landale reports.