Lord Warden of the Cinque Ports was combined from 1267 with the office of Constable of Dover Castle. However, from 1708 Walmer Castle at Deal was to be preferred as the official residence of the Lord Warden of the Cinque Ports. The Lord Warden also holds the office of Admiral of the Cinque Ports with a maritime jurisdiction extending to the middle of the English Channel, from Redcliffe near Seaford, in Sussex to the shore underneath the Naze Tower, encompassing Brightlingsea in Essex, the only Cinque Port north of the Thames. In earlier centuries the northern limit was taken as the Shoe Beacon in Essex. The
Lord Warden of the Cinque Ports courts of Brodhull and Guestling were established to protect the privileges of the Cinque Ports by the portsmen themselves. From the 15th century these courts had been largely replaced by the Lord Warden's Court at Dover. From the 16th century the principal business of the courts was the installation of the Lord Warden and the court is now only occasionally summoned. The office continued to be a powerful one. In 1550 the Mayor and Jurats of Dover refused to accept a Royal Writ because it was not accompanied by a letter of attendance from the Lord Warden. The member ports'