▁before ▁ 2 0 0 0 ▁are ▁not ▁included ). ▁Of ▁these , ▁only ▁two ▁were ▁originally ▁released ▁before ▁the ▁year ▁ 2 0 0 0 : ▁White ▁Lad der ▁( 1 9 9 8 ) ▁by ▁David ▁Gray ▁and ▁Gold : ▁Great est ▁H its ▁( 1 9 9 2 ) ▁by ▁AB BA . ▁ ▁Back ▁to ▁Bed lam ▁by ▁James ▁Bl unt , ▁which ▁was ▁the ▁best - s elling ▁album ▁of ▁the ▁ 2 0 0 0 s ▁de cade , ▁was ▁also ▁the ▁best - s elling ▁album ▁of ▁the ▁ 2 1 st ▁century ▁until ▁August ▁ 2 0 1 1 ▁when ▁it ▁was ▁passed ▁in ▁sales ▁by ▁Amy ▁W ine house ' s ▁Back ▁to ▁Black , ▁following ▁W ine house ' s ▁death ▁the ▁previous ▁month . ▁Less ▁than ▁four ▁months ▁later , ▁however , ▁Back ▁to ▁Black ▁was ▁itself ▁over t aken ▁ ▁by ▁A de le ' s ▁ 2 1 . ▁As ▁of ▁October ▁ 2 0 1 9 , ▁ 2 1 ▁remains ▁the ▁biggest - s elling ▁album ▁in ▁the ▁UK ▁since ▁ 2 0 0 0 ▁( and ▁fourth ▁best - s elling ▁ever ), ▁having ▁sold ▁over ▁ 4 , 9 4 0 , 0 0 0 ▁copies . ▁ ▁Best - s elling ▁albums ▁since ▁ 2 0 0 0 ▁Sales ▁figures ▁from ▁the ▁O CC ▁on ▁the ▁date ▁given ▁in ▁the ▁reference . ▁The ▁O CC ▁differenti ate ▁' chart ▁sales ' ▁( which ▁include ▁streaming