There isn't a legal limit for cycling. So 'failing' a breathalyser misunderstands what that means. You can't fail such a tedt as a cyclist, no more than you can fail a breathalyser test as a pedestrian.
Liam, your licensing idea is impractical, unworkable and pointlessly bureaucratic.
It would cost more lives than it would save, and be a huge waste of government time and money.
You're talking out of your arse, big tone. 'it would cost more lives than it saves, what a stupid statement, how on earth would making cyclists sit an exam so they know the highway code or put them in the cab of a lorry be more dangerous then the current situation? Stupid statement.
As for a waste of time and money, again, bullshit. Make the bikes carry a registration plate and it becomes fine. It would save lives as people would know what they're doing, and would hold them accountable for doing dangerous things like jumping red lights that costs lives