First song to reach No.1 in the UK on download sales alone

First song to reach No.1 in the UK on download sales alone
Who
Gnarls Barkley
What
First
Where
United Kingdom
When
08 April 2006
“Crazy”, by American duo Gnarls Barkley (aka Brian ‘Danger Mouse’ Burton and Thomas ‘Cee Lo Green’ Callaway), was the first song to reach No.1 on download sales alone. On 31,000 sales, “Crazy” debuted at No.1 on 8 April 2006, one week before it was available on CD.