|To:||Guilden Sutton (SJ431686)|
|Length:||21 miles (33.8 km)|
|Meets:||M56, A41, A55|
|Former Number(s):||M531, A5032|
|Route outline (key)|
Mid-Wirral Motorway between Birkenhead and Chester. Section south of Hooton was previously numbered M531, with the M53 planned to be continued southwards at the half-constructed junction immediately to the west of junction 5 to meet the M56 at Backford.
The Chester Eastern and Southern bypasses were meant to become M53 once they were linked to the motorway network. However, by the time the Eastern bypass opened, that scheme had been watered down and the road didn't become motorway.