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
Marbury, Cheshire parish council was formed in 1959, before which the civil parish was administered by Marbury Parish Council, formed in 1894. From 1974 the civil parish was served by Crewe and Nantwich Borough Council, which was succeeded on 1 April 2009 by the unitary authority of Cheshire East. Marbury cum Quoisley falls in the parliamentary constituency of Eddisbury, which has been represented by Antoinette Sandbach since 2015, after being represented by Stephen O'Brien (1999–2015). The civil parish has a total area of . The terrain is undulating in character, rising from around 75 metres by the Llangollen Canal in the north