The song is often misspelled as "Ferry 'Cross the Mersey", but according to the song's lyrics, the track is correctly titled "Ferry Cross the Mersey". "Cross" is not a contraction of the preposition "across" but rather an imperative verb – "Ferry, cross the Mersey." The Mersey Ferry runs between Liverpool and Birkenhead and Seacombe on the Wirral.
In the US, the title was rendered on all 45s – even reissues from decades after the original release – as "Ferry Across The Mersey".
In May 1989, a charity version of "Ferry Cross the Mersey" was released in aid of those affected by the Hillsborough disaster, which claimed the lives of 95 Liverpool fans the previous month (a 96th, Tony Bland, died in 1993 as a consequence of that disaster). The song was recorded by Liverpool artists The Christians, Holly Johnson, Paul McCartney, Gerry Marsden and Stock Aitken Waterman. The single held the #1 spot in the UK chart for three weeks and the Irish chart for two weeks.