David Cameron on first trip to Saudi Arabia
13 January 2012 Last updated at 14:02 GMT
David Cameron is visiting Saudi Arabia for the first time in his role as as British prime minister, for talks which No 10 hopes will "broaden and deepen" the UK-Saudi relationship.
Saudi Arabia is the UK's largest trading partner in the Middle East with annual trade worth £15bn a year, and it has £62bn invested in the UK economy.
Frank Gardner reports.