Samantha Cameron is expecting a baby in September, it has been announced.

Mrs Cameron and her husband, the Conservative Party leader David Cameron, were said to be "completely thrilled" by her pregnancy.

Mr Cameron has recently indicated in interviews - including a recent TV quiz by Alan Titchmarsh at a time when he must have known of his wife's condition - that he would be happy to add another child to their family.

A Conservative Party spokesman said: "The baby is due in September and David and Samantha are completely thrilled."