Yes well clearly by exceeding the speed limit you both reduced the amount of time to deal with the situation, leading to you having to take emergency action. If you'd kept to the limit and aimed to move out in good time before the lorry, then either you would have been able to when you wanted, or else if the other one was blocking you, you'd have had time to just ease off a little bit, let it get ahead, and then slot in behind it.
OH AND ALSO THOUGHT IT WAS CLEVER TO BE IN THE LEFT HAND LANE WHICH IS FOR LEFT AND STRAIGHT ON ONLY TO GO ''RIGHT'' ROUND THE ROUNDABOUT BEFORE CUTTING ME UP
Sounds like you are trying to make a 'cut up' manoeuvre sound reasonable. Also contravene 162, 163, 164, 167 & 168 of the Highway Code. Back to driving school?
Illegally tinted windows!