Ladies and gents got ready to strike Avenger (4,5)

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

JOHNS (‘ladies and gents’ – toilets) TEED (‘got ready to strike’ – on a golf course) – John Steed is a fictional spy who wore a 7/15 in The Avengers TV series in the 60s and 70s