Parking fine but no lines

[Fringer]

Hi

 

My son has received a parking fine for parking on the road where there was a break in the painted line

there was no sign near the break but one further down the road saying No Waiting at anytime but there was nothing where he parked. 
He took a photo and submitted a dispute but has had a response saying there must have been a car parked there when the lines were being painted and it doesn't mean there is no line there?

[BazzaS]

Was there a “t-bar” at the end of the line (where he could have reasonably believed the restriction ended), or did it “just peter out” (where it would be reasonably expected that he’d have to check) ......