correct, there were 3 cars parked there, 2 behind, a space that i reversed into and one in front.
parked up and walked past the front of my car, so didn't even think of checking. i know there's all 1 hour parking bays round the town, so obviously foolishly assumed that's what i was in.
as said only saw the sign, when i went back to car and saw the ticket and then looked at the sign.