I was doing 60mph in a 20 limit, think the driver had a dashcam, and is going to send it to police?

this is in the UK, does anyone know what will come of it? if they show the police the footage will i get a knock on my door within the next day or 2 and get a fixed penalty if they go ahead with it
Update: dashcams do not pick up speed, but they could still charge with dangerous driving.
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