The 2008 XL release sold its one-millionth copy yesterday morning as it continued a revival in sales started last year when several contestants on The X Factor performed in her style the Bob Dylan song Make You Feel My Love, which features on 19.
Two years after coming out, the album was the 85th biggest-selling artist title of 2010, selling 155,294 copies during the year, while up to the end of last week it had sold another 256,534 copies this year to stand as 2011's fourth-biggest artist album behind 21, Def Jam/Mercury artist Rihanna's Loud and Elektra/Atlantic act Bruno Mars' Doo-Wops & Hooligans.
Adele's first album is only the third issued by XL to reach 1m sales in the UK with the second, 21, hitting seven figures last week. Its first million seller, Prodigy's 1997 The Fat Of The Land, remains the independent company's all-time biggest seller both in the UK and globally.
The album 21 is on course to spend a seventh consecutive week at number one this coming Sunday, having already sold an additional 70,000 copies this week.
It will be the longest run at number one since Sony's The Essential Michael Jackson album spent seven weeks at the top during July and August 2009 following Jackson's death and the lengthiest by an indie release since Independiente's Travis album the Man Who spent a ninth week at the top in March 2000. However, this run was non-consecutive.