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 of 4,079. Today Llangollen relies heavily on the tourist industry, but still gains substantial income from farming. Most of the farms in the hills around the town were sheep farms, and the domestic wool industry, both spinning and weaving, was important in the area for centuries. Several factories were later built along the banks of the River Dee, where both wool and cotton were processed. The water mill opposite Llangollen railway station is over 600 years old, and was originally used to grind flour for local farmers. In the late 19th century, Llangollen had a weekly newspaper, the "Llangollen Advertiser".