PRINCE Charles will be joined by his companion Camilla Parker-Bowles during his visit to Marlborough tomorrow.

The prince's press office at Clarence House said it was not unusual for Mrs Parker-Bowles to join him on formal engagements and she had been with him on a number recently.

He is visiting the town to mark the 800th anniversary of the town's charter being granted.

Mrs Parker-Bowles, who lives near Lacock, will be in Marlborough in her capacity as a trustee of the Bobby Van Trust.

Wiltshire has two Bobby Vans whose operators, Alan Weston and Rod Law, attend homes of crime victims and advise them on security. Prince Charles, will arrive at Marlborough College by helicopter at 10.45am.