Yeah I had heard that actually Joe tbh.
I guess it's one of them really, I'll hardly use then, but if I'm on a country track in low visibility conditions pulling a yaris out of a snow berm I'll definitely have the beacons on, because they increase safety! And I'm pretty damn sure that the police would see it that way too.
Like last year for instance.
A lad in a punto had almost comedically lost his car and Austin Powersed it sideways into the Armco wedging it in a slot.
I turned up out the blue, and realised that it was better to shift the car than wait for a police car, then an ambulance and three fire engines.
So pulled into the lane of traffic, had hazards and roof ambers on, huge obstruction etc, but coordinated with the police who were on scene and recovered the vehicle.
Nobody was concerned that my car was obstructing the traffic or had flashy lights cos the lights were preventing cars crashing into me!!
So all in all I think it's in the eye of the beholder and if safety is the priority then the LEDs are a good shout.
Just like flamer kits, nitrous, decats, even cut slicks - the chances are you'll be alright unless you shove it in the rozzers face!
Plus the LEDs are a safety item so it's kind of easier to justify