My mother has a blue badge, which permits 2 vehicles to be exempt from congestion charge. It's interchangeable. Her vehicle usually stays on, but since there is an additional 2 vehicles in the household, we swap them whenever one needs to go into the congestion zone. But this day, all 3 vehicles went into congestion, so one of us would have had to pay the congestion charge, so I volunteered to, but obviously I didn;t (forgot) hence this PCN.
I doubt this sob story holds any value, but it's just for some context.
Essentially I'm hoping for something technical to challenge it, if at all
