Conversation so far:
Was One Way Ticket to Hell the name of an album by The Darkness?
One Way Ticket to Hell ...and Back is the second studio album by the British rock band The Darkness.
How did One Way Ticket by The Darkness do on the charts?
The album reached number 11 on the UK Album Chart and eventually attained platinum status in the UK.
Did The Darkness tour for One Way Ticket to Hell...and Back?
The band followed up their second album with a tour of the UK and Ireland, consisting of 12 dates in the major cities.
How did the The Darkness tour for One Way Ticket to Hell...and Back do?
Few of the venues sold out, their appeal seemingly having become more selective.
What record label were The Darkness signed with at the time of One Way Ticket to Hell...and Back?
Atlantic Records

Question: When did their decline start?
Self-contained rewrite: When did the band The Darkness' decline start?