" always indicated briefly 'left' as soon as he had passed first...

" always indicated briefly 'left' as soon as he had passed first turn-off on the left."

He's a good driver then.

"Driving straight ahead

You don’t need to indicate on approach. Enter in either the left or right lane, stay in and exit from the same lane. Indicate left when you’ve passed the last exit before the one you intend to use. "

http://www.roadrules.rsc.wa.gov.au/road-rules/roundabouts