i always thought it was an automatic 5year+ plus for doing over a ton
well there you go then, im proof of the fact that this statement is complete and utter tosh
as i explained earlier, the magistrates have 2 options when you're referred to them. This can happen only at 25+ over the limit
1) points and a fine. This can be be any ammount i think, and fine can be up to £1000 and is means tested. If you hear about some crim being fined £80 for doing 150, its because he only gets £70 a week benefits.
2) a ban of 14 - 56 days. If your only caught at 98mph, or in the case of the person who was doing 15mph, you'll only get the minimum 14 days. However in theory you can only be banned for up to 56 days for the speeding offence in itself, no matter how fast your going. So even at 150, for the charge of speeding, they could only ban you for 56 days
If they wanted to ban you for longer, they would need some other means. If you were doing 100+ and was generally driving irresponsibly, changling lanes, tailgaiting etc.. or just plain doing 150mph then you'd probably charge you for dangerous driving. This then means they can ban you for much longer.
Other way they can get you, is if like you me, you already had 6 points, they could issue you with another 6 points and a fine. Which then lead to you loosing your license for longer than 56 days, but under a separete offence of clocking up more than 10 points, not speeding.