An official spokesman for William, eldest son of the late Princess Diana, said only: “We do not discuss his private life.”
Middleton, the eldest child of middle-class entrepreneurs who had won plaudits for her fashionable dress sense and poise, was widely tipped to be Britain’s next Queen.
She was pursued everywhere by paparazzi photographers – as Princess Diana was.
The Sun said that the couple, who met while studying at St Andrews University in Scotland, had reached “an amicable agreement” to end their relationship.
The young couple – he is 24 and she is 25 – were seen hugging and kissing during a skiing holiday in Switzerland only last month.
The Sun said their relationship had been strained since William graduated from Sandhurst military academy last December at a ceremony attended by Middleton.—Reuters