OK. This is "be kind fo steve" day. Inspector Clouseau's assistant here.
This is from Private Eye
Labour's leader, Miliband's debut after providing backing for Darling? (4)
L = labour's leader
M = Milliband's debut
providing - if(reversed)
= Film (Film called Darling 1965)
Steve, can you show which crossword, clue etc. next time you post. Ta muchly