LONDON, Rajab 19, 1436, May 8, 2015, SPA -- British Prime Minister David Cameron is due to meet Queen Elizabeth at 1130 GMT after winning the most seats in a national election, Reuters cited a spokeswoman as saying. Visiting the monarch is a formality required to form a government. --SPA 11:15 LOCAL TIME 08:15 GMT www.spa.gov.sa/w