Manchester United are the Barclays Premier League champions, clinching a record 19th league title after a draw against Blackburn Rovers on Saturday.
Brett Emerton opened the scoring at Ewood Park before Wayne Rooney scored a vital equaliser from the penalty spot after Javier Hernandez was brought down.
Manchester United boss Sir Alex Ferguson said he was proud of the achievement, with the latest trophy being his 12th league triumph with the Red Devils.
It was also a day to celebrate for Manchester City, who lifted the FA Cup at Wembley after beating Stoke City 1-0 thanks to a goal from Yaya Toure.
It could now be the start of something special for City, who claimed their first piece of silverware since 1976.
On Sunday, West Ham were left distraught after dropping out of the Barclays Premier League thanks to a soul-destroying 3-2 defeat at Wigan.
Avram Grant was sacked as the Hammers' manager in the aftermath of the defeat, with the club now condemned to at least a season in the npower Championship.
Elsewhere, Chelsea drew 2-2 with Newcastle after a late equaliser from Steven Taylor denied the home side three points.
The Blues remain on course to finish second in the Barclays Premier League this season.
Arsenal were beaten 2-1 by Aston Villa at the Emirates Stadium, undermining their hopes of ending the campaign in third position.
Tottenham beat Liverpool 2-0 in the battle for fifth spot, with the win representing Spurs' first at Anfield since 1993.
Goals from Rafael van der Vaart and Luka Modric have put Harry Redknapp's side in pole position for a spot in next season's Europa League.
Birmingham are in danger of following West Ham into the second tier after a 2-0 loss against Fulham left them teetering.
Meanwhile, one-time relegation threatened West Brom are up to 11th after beating Everton 1-0 at the Hawthorns.
On Saturday, Wolves and Blackpool both secured vital wins to boost their own hopes of survival, with the race to beat the drop now coming down to the final day of the season.