I live on the High Street in the London Borough of Sutton.
Recently a visitor received a PCN while parked on the single yellow line outside my house shortly before 8pm.
All the nearest (under 100m) yellow control signs for single yellows nearby show restricted times of Mon-Sat 08:00 to 18:30, however there is not a yellow sign directly at this location. Seeing the single yellow line, and the time, my visitor thought parking would be fine.
At the location there is also double yellow blips, controlled by a No Loading sign.
To compound the confusion, at this location there is