In reply to First.officer...
Quote...
"Not in the London TMA if they give you free speed...."
I did say "most" airspaces in the world... Too bad Canada changed their speed restrictions to align themselves with "the rest of the world" some years back.
It used to be that on departure in Canada if you were cleared above 10,000' one could accelerate to any speed above 250 knots while in the climb. )-: