In part two of our gallery feature, we recall United’s – and Sir Alex’s – seven most recent league triumphs, from 2001 to 2013…
Glory story: United blow the opposition away to finish 10 points clear of second-placed Arsenal, as Sir Alex becomes the first manager to win three titles in a row.
Top gun: Teddy Sheringham, 15 league goals
Turning point: After a 1-0 defeat at Arsenal in October, a run of 15 wins from the next 19 games took United 13 points clear – and the Reds then smashed the Gunners 6-1 at home on 25 February.
Party time: 14 April 2001. United’s 4-2 home win over Coventry, coupled with Arsenal’s 3-0 slump at home to lowly Middlesbrough, sealed the title with five games to spare.
Sir Alex said: "Winning three in a row is something special. Perhaps we’re like a great artist whose work is only really appreciated with the passing of time."
Glory story: The Reds’ worst start to a Premier League campaign proves far from fatal when nine wins from the last 10 games leaves title-holders Arsenal trailing by five points.
Top gun: Ruud van Nistelrooy, 25 league goals
Turning point: United preserved a three-point lead by holding the Gunners 2-2 at Highbury on 16 April.
Party time: 4 May 2003. Arsenal’s shock 3-2 defeat at home to relegation-haunted Leeds ensured the celebrations could begin; United had beaten Charlton 4-1 at OT the previous day.
Sir Alex said: "We played better than any other team in the league from March onwards and you can't beat the kind of momentum we were able to build up."
Glory story: United’s best start to a season since 1993/94 paved the way for a return to the summit of English football, six points above Jose Mourinho’s outgoing champions Chelsea.
Top gun: Cristiano Ronaldo, 17 league goals
Turning point: On 28 April, the Reds recovered from 0-2 down at Everton to win 4-2 while Chelsea were held 1-1 at home by Bolton. United went five points clear with three games left.
Party time: 6 May 2007. The day after beating Man City 1-0 at Eastlands, United were crowned champions when Mourinho’s men only draw 1-1 with Arsenal at the Emirates.
Sir Alex said: "Chelsea won the last two titles at a canter. We had to do something about it."