I've only just fathomed why iy's OUTBACK myself, chris: worry = anagrind, the solution is an anag. of "about" +"ck" (cork lacking or)!!!
And now back to torturing myself over the last 3 of jolan's............................
My rt has a misprint for 18a 1950's should read 1980's - first try - the only answer that I could find was Space Patrol with a character named Robbie - but didn't fit !!
Hi everyone
18a was a 1950's HIT song by Little Richard.
the SERIES was of the same name and starred Robbie Coltraine.
Thanks for explaining "Outback" clue.
20 d is an opera contained in the words "of Austrian"