and was simply following my satnav
Oh dear, how often do we see this on the first post from the OP ! Satnavs are useful but in big cities you must be alert for signs, even if you updated your satnav yesterday, because the basic geographical info is almost never up-to-date.
Post their video if you can, or make sure the PCN has the PCN Number and car reg on it visible. The video is their sole evidence. Also post a GSV link as John UK requests.