I was once done for doing a shade over a hundred on a well-lit, empty motorway once.
There was a Jag in the middle lane cruising at about 95mph. I came by, overtook the chap, went back into the middle lane and touched the brakes. Soon as he saw my brake lights go on and knew he wasn't gonna get me for more he turned on the blues.
Was lucky to get away with 6 points and a ban.
I mean, tbh, I was speeding and it was a fair(ish) cop, but it didn't make much sense. The German "active" autobahn is really a much better system. Derestricted completely where appropriate, and a safe, reasonable speed (130km/h - 80mph) elsewhere.
I don't hold with speeding in 30-50 areas though. In terms of impacts, human survivability decreases rapidly beyond 28-30mph* so I usually run at about 25 in those areas, even if people behind me complain.
*Humans appear to have evolved to survive impacts at maximum sprinting speed, which is roughly 28mph. Makes sense. Luckily the government had set the lower speed limit at 30mph before they cottoned onto this fact.