Sorry to say it, but I have to concur with Tincombe's view. The yellow blips are clearly visible, as are the double-yellow lines albeit badly worn, but perfection of lines and blips is not needed to prove the contravention. The PCN gives a clue on the exact location without actually saying so, by giving location 23. Its actually Number 23 a shop called "Upton Local". Just beyond your car is a parking bay.