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
Cinque Ports parliament were sent to the warden following which representative barons of the Cinque Ports were selected to attend parliament. Thus the warden's duty in this respect was similar to that of the sheriff who received the writs for distribution to the barons in the shires. The existence of common (i.e. communal) seals of the barons of the individual ports (see illustration) suggests they formed a corporation as the seal was designed to be affixed to charters and legal documents which would bind them as a single body. This no doubt related to their privileges as monopolies. The warden and barons