have been looking at visors online and was wondering where the law stands on iridium tinted visors ( http://www.racevisors.co.uk/categories.php?c=157&p=498& ) wouldn’t want to spend the money on it only to find out that they’re illegal
The answer is on that website - information - at the bottom 
http://www.racevisors.co.uk/information.php
Doubt they’d be legal
They are not legal but I have been using tinted or dark visors for 10 years (not now in winter) and have never been stopped of fined for one…(knocks on wood) I believe met police dont really care and have more important things to worry about.
+1
I do take a clear visor in a holder if i know i will be out late, but generally i will wear my dark visor on most sunny days:)
A gold iridium visor looks very cool 
I have a mirrored visor on my agv and would’nt be without it, as its not dark enough to warrant a clear visor at night, but none the less its a touchy subject if say for instance you have an accident at any time of day or night it can be used against you in a court of law as a contributory factor(trust me …been there) use one at your own risk:D
I know last year in Peterborough there was a Police Operation clamping down on bikers, looking for Tinted visors, Not displaying road tax, race cans, small index’s etc
I got pulled for a tinted visor luckily i always carry a clear one with me, they couldn’t really do much as i just put the clear one back on.
I guess if they wanted to they could of giving me grief, but coz i had a clear one they probably overlooked it.
But they had me for small index’s
Issued me a vehicle defect ticket:w00t:
I think as long as you don’t use it at night and you carry a clear one you be alright. 
I used mine all last summer without trouble but waspie’s right. useless in the dark too.
[quote]
Mr-C (04/02/2010)
The answer is on that website - information - at the bottom http://www.racevisors.co.uk/information.php[/quote]
oops, probably should have seen that, but thank all for the advice
It can only be used as evidence of contributory negligence if it can be proven that wearing a dark visor directly contributed to the cause of the crash, and even then it is unlikely to affect the claim by more than 10%.
I have dealt with a number of crashes over the past couple of years where the rider was wearing a black visor, and because it had no direct bearing on the cause of the crash, that evidence was disregarded.
It all comes down to circumstances and evidence and will not end up being a mandatory contrib factor.