If the area is signed as NO STANDING, then that's exactly what it means - NO STANDING!
There is no excuse you can use. It's like making up a reason for doing 65 in a 60 zone to get out of a speeding fine.
Or being in a clearway and 3mins after the signed time, you have a fine & car is getting towed.
Whilst a lot of stuff is harsh - ye, they are road rules.