The Princess of Wales is touring a heritage textile mill in Yorkshire which has a close association with her family.Kate on Tuesday afternoon visited AW Hainsworth in Pudsey, Leeds, which held a royal warrant from the late Queen and bought a woollen manufacturer once owned by her father Michael Middleton’s relatives.The company made the scarlet tunics of the Guardsmen who were on duty during the coronations of both Queen Elizabeth II in 1953, and King Charles III in May.