Orson climbed to the number one slot this weekend after three weeks in the singles chart.
‘No Tomorrow’ knocked Chico off the top spot, while Black Eyed Peas’ ‘Pump It’ also slipped a place.
Elsewhere, Massive Attack’s ‘Live With Me’ entered at 17 and Be Your Own Pet’s ‘Adventure’ debuted at 36.
In the album chart, Corinne Bailey Rae claimed the number one and Placebo entered at seven.
Fightstar’s ‘Grand Unification’ and Graham Coxon’s ‘Love Travels At Illegal Speeds’ made disappointing entries at number 28 and 24 respectively.