Shortly after Preston's arrival in London, a group of Edinburgh Freemasons living in the English capital decided to form themselves into a lodge. The Grand Lodge of Scotland felt they could not grant them a constitution, as they recognised the jurisdiction of the Antient's Grand Lodge in the capital. They were accordingly constituted as Lodge no. 111 at the "White Hart" in the Strand on 20 April 1763. It may have been at this meeting that Preston became their second initiate. Unhappy with the status of the relatively new Grand Lodge which they found themselves part of, Preston and some others began attending a lodge attached to the original Grand Lodge of England, and persuaded their brethren to change allegiance. Accordingly, on 15 November 1764, Lodge no 111 of the Antients became Caledonian Lodge no 325 (now 134), under a constitution which was just starting to be known as the "Moderns"; that lodge later held its meetings at the Great Eastern Hotel on Liverpool Street in London. Antient/ancient and Modern referred to the ritual used by the respective constitutions, not to the age of the Grand Lodges. The shift of allegiance occasioned some vitriolic correspondence between Caledonian Lodge and their former Grand Lodge. Caledonian Lodge then became the major component in the first Grand Chapter of Royal Arch Masonry.