Nearly right.
If you are given points, you would be given a DVLA driver number. OF you then acrue 12 on that number, the same hapens.
At no point do you need to change. you full eu based license takes primacy.
70 in a 50... Is it a legally enforced area. What stopped you, how, with what. Were the signs visable ?
How far do you push it ?
Have you been reported, or just NIP'd ?
I'd suggest that you take the 3 points if they are offered.
I dont think its a 6 pointer, but a magistrate could give you this.
Hope it helps.