It's not just motorways where other vehciles come up behind you fast.
This is the incident that made me fit flashing ambers;
When I go to shows, i'm always at the back and my dad is in the front, we were on our way to a show and was driving along the A30 west of london, it was about 4am.
We were the only vehciles on this stretch of road, and in my rear view mirror I could see a vehcile comming up behind me very FAST.
"he's going to go straight into the back of me" ! thought to myself.
I slowed down, so to leave plenty of room fin front of me, grabbed the steering wheel very tightly and put my hazard lights on.
At the very last moment the vehcile comming up behind slammed on his brakes, I could tell he slammed his brakes on as his headlights went down very sharply and then shot back up again.
The 1st thing I did when I got back from the show was to fit the led's to my landy, they cost me £80, and worth every penny.
TBH, I don't care about smart arse lawyers or the RTA, I do what is safe for me.
Ive had them fitted for about 4 yrs and have never been stopped by the police.