Llangollen Canal part of the London Midland and Scottish Railway soon afterwards. After the takeover by the London Midland and Scottish Railway, regular maintenance was often not carried out, and gradually the canals silted up, so that boats could not operate with full loads. Traffic declined, and was significantly affected by a breach that occurred at the Perry Aqueduct, about to the south of Frankton locks, which effectively closed the Montgomeryshire Canal to all traffic. Traffic beyond Frankton to Llangollen had ceased in 1937, and the Frankton to Hurleston section was not used after 1939. The London Midland and Scottish Railway obtained
Llangollen Canal they crossed accompanied by the actor Hugh Griffith and his wife Gunde. The Rolts moored for nearly three months just beyond the aqueduct, near the site where their boat had been built during the First World War. In August they were joined by Roger Calvert and his family, who were attempting to reach the top of the canal in a home-made boat, which was pulled by a donkey. The Rolts travelled with them for part of the journey. Edward Wilson, another canal enthusiast, reached Trevor in his boat in 1952, and the Inland Waterways Association held a rally at Llangollen