4 Across, 21's success at cards (3,3,4) (21=Faint Welsh emblem?(4,4)
9 Across, Get friendly with fellow's bird in lift (10)
11/13 Across, Is fairly shrewd at work (not showing up! ) (5,1,5,2,3)
12 Across, Ex-pupil stole new drug - is no longer employed (8)
Compiler - TYRUS
Many Thanks