When organised football resumed after the war Accies were relegated to the Second Division.
Success came in the late 1980s when promotion to the Premier League was achieved in 1986 and 1988, going up as First Division champions on each occasion, but like the previous promotions the spell in the top division was for one season only. In 1991 and 1992 the club won the B&Q Cup, the competition for all non-Premier teams, firstly defeating Ayr 1-0 at Fir Park and then Morton 3-2 at Love Street. Promotion back to the Premier was also missed on goal difference that season.
New ground regulations imposed by the safety authorities saw the club vacate Douglas Park, home to the Accies since 1888, in 1994 but the hoped for move to a new stadium did not materialise as planned and the club ground shared with Albion Rovers and Partick Thistle (two spells) for seven years. That period was generally a low one for the club. Two relegations befell the club.
2005-06 saw a concerted challenge at the top end of the First Division, the club were also in the final again of the Bell’s Cup (the B&Q when first won by Accies) and reached the quarter final replay stage of the Scottish Cup, the club’s best run in 39 years. Season 2007-08 saw the club top the table from first game to last as they won the First Division championship again to be promoted back to the SPL. Much of the club’s success was accredited to bringing through young players and manager Billy Reid giving them their chance and the names Easton, McArthur and McCarthy became synonymous with the good football played by the club. The club began the SPL season well, winning three of the first five fixtures, and topping the table for two weeks, and although results went up and down during the season, a great middle spell saw the club ultimately finish 9th in the SPL to deservedly earn a second successive season in the top flight for the first time in 70 years. The club also reached both quarter finals of the cups that season, losing to Rangers at Ibrox on each occasion.
Promotion was gained again in 2014, this time via the play offs, following a penalty shoot out win at Hibs, and the club have remained in the top flight since.
In 2018 the club took part in the UEFA Youth League (u19s) for the first time, giving added recognition to our academy.