Tks for the replies.
Everyone's overworked trying to squeeze a quart into a pint pot.
I was trying to establish:- the first argument that 'the speed limit does not apply above 3000ft because the airspace is Class A and you are no longer on the BPK3T/U SID' is wrong, and so 250kts should be maintained until FL100 unless cancelled by ATC.
Seems so.
fleecy