Animated officer half-heartedly supporting member of staff getting part in The Bill (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

DIB b LE (officer in ‘Top Cat’ – a children’s cartoon) missing one of the middle letters or ‘half-heartedly’ underneath or ‘supporting’ MAN (staff) – we have to be of a certain age to remember ‘Top Cat’!