Tommy Lawson resigning the following day. His assistant Ian Johnson was given temporary charge of team affairs whilst the club looked for a replacement. On 13 September 2018, Marine announced the appointment of former Chester manager Neil Young. He was joined by Alan Morgan who was appointed assistant manager on 21 September 2018. Young started his tenure with a 1–0 defeat at Warrington Town on 15 September 2018. In 2019, Marine were relegated (for the first time in their history) to the Northern Premier League Division One North West. It was the first relegation in their history, and followed 40 consecutive seasons at the highest level of the Northern Premier League. In 2021, Marine reached the third round of the FA Cup, which they lost 5–0 to Tottenham Hotspur. With Marine 161 places below Tottenham, the gap between the two teams was the biggest in FA Cup history. The match raised over £300,000 for the club from the selling of 32,202 "virtual tickets" to fans of Tottenham and other clubs who wished to support Marine but were unable to attend the match due to the COVID-19 pandemic. After the FA Cup run in the 2020/21 season, Marine opened a pub with the prize money called 1894 Bar and Bistro. Marine finished 5th in the 2021/22 season. They played Workington in the playoff semi final which they won 3-2 after extra time and a Neil Kengni hat trick. They then won the playoffs after coming from behind to beat Runcorn Linnets which got them promoted to the Northern Premier League Premier Division. FA Cup The club have twice reached the third round of the FA Cup. In 1992–93 they lost 3–1 to Crewe Alexandra, and in 2020–21 they lost 5–0 to Tottenham Hotspur. Marine have beaten three Football League clubs (Barnsley, Halifax Town and Colchester United) in the competition. FA Trophy Marine have twice reached the semi-finals of the FA Trophy, in 1983–84 and 1991–92. Both times, they played a team from the Northwich area. On both occasions they drew away, 1–1 and 2–2 respectively, before losing at home. In 1983–84 they lost 1–3 on aggregate to Northwich Victoria. In 1991–92 they lost 3–6 on aggregate to Witton Albion. Northern Premier League Cup Marine have appeared in six finals, winning the cup a record four times. Runners Up 1980–81, 3–4 vs Runcorn Winners 1984–85 3–2, vs Goole Town Runners Up 1985–86,