Tolerance levels are usually 10% plus 1 to 3 mph depending upon governing authority (usually Police force) to allow for error / camera calibration issues, so it’s unusual to get a ticket for less than 56mph in a 50.
It’s 10% + 2 mph for the majority of the country, afaik only London and Lancashire have 10% + 3mph.
That being said: it’s entirely up to the agency running the camera. They can absolutely decide for themselves to argue for 5% + 2mph, for example.
Speeding: what is the “10% plus 2” rule and what does it mean?
In Scotland, there’s no tolerance at all, 1 mph over the limit is enough to get you fined, apparently.
I’m pretty sure that the ticket is legit, or at the very least i wouldn’t question it based on the recorded speed. It’s entirely in the realm of a fine.
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