The posts were in many cases established on account of some special circumstance, and were of a temporary character. The first regular post--that established in 1482 during the war with Scotland--was, of course, temporary; but at much later dates, when "ordinarie," or permanent, posts had been established, such as the post from London to Berwick and that from London to Beaumaris, it was still usual to establish "extra ordinarie" posts "in divers places of the Realme" as occasion might from time to time require, as, for example, during the periods of the sovereign's progresses.[9] The early posts had a second function, not less in importance than that of providing for the conveyance of the sovereign's despatches, and despatches sent on affairs of State viz. the provision of means by which persons actually travelling on the business of the sovereign, though not bearing despatches, might do so with facility. This second function, the travelling post, continued until the eighteenth century. It is a function which is essentially akin to the provision of a means of intercommunication by means of letters. In many parts of the United Kingdom, and also in other countries, the means provided for the conveyance of the mail are still largely used by persons desiring to travel.[10] The use of the post-horses by ordinary travellers commenced at an early period. In 1553, when the posts had been in existence only some fifty or sixty years, a rate of a penny a mile for persons riding post was fixed by statute.[11]