According to the controller, I should have landed & proceeded back to the apron/ramp upon receiving the flashing white signal. Somewhere along the way, he mentioned its as per ICAO operation procedures.
When people quote procedures to you, always ask them to show you the procedure they are referring to! If they are correct they will do so quite easily.
White Flashing Signal:
Land at this
aerodrome after
receiving continuous
green light, and
then, after receiving
green flashes,
proceed to the
apron.
I was taught this in 1967 and have never seen it used so well done on remembering!