Received a speeding ticket on the motorway in a variable limit - can I appeal?

I was travelling down the M1 when the speed limit said 60mph. I slowed to 50mph and the camera flashed at the next overhead gantry when it was displaying 50mph. I have now received a speeding ticket, with a claim that the camera was set to 40mph. How can I fight my case?

Asked on 4 December 2019 by craig nicholls

Answered by Honest John
Simply claim that the overhead display said 50mph. It is an automated system and if this happened to other drivers then it will have generated a cluster of false NIPs that will put an alert on all of them.
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