Shropshire Union Canal links are to the Llangollen Canal (at Hurleston Junction), the Middlewich Branch (at Barbridge Junction), which itself connects via the Wardle Canal with the Trent and Mersey Canal, and the River Dee (in Chester). With two connections to the Trent and Mersey (via the Middlewich Branch and the Staffordshire and Worcestershire Canal) the SU is part of an important circular and rural holiday route called the Four Counties Ring. The SU main line was the last trunk narrow canal route to be built in England. It was not completed until 1835 and was the last major civil engineering accomplishment of
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