IMO...
I'd love for this to get to adjudication!
OP, I'll break down the absolute nonsense of the markings and signs.
1. Let's take the footway parking sign ahead. In combination sith the left-facing arrow this means that, subject to other prevailing limitations, parking of vehs of no more than '1750kg unladen'
may park with 2 wheels on the footway.
2. Now for the parking place markings. Item 6 of the Part 4 sign table of Schedule 7 to the Traffic Signs etc. Regs means that the 'edge of carriageway' may be used to indicate one of the longitudinal boundaries of a parking place.
https://www.legislation.gov.uk/uksi/2016/362/schedule/7In addition, the traffic sign used is of the form prescribed at Item 2 of Part 4 of Schedule 4 to the Regs and states that parking is permitted for permit holders between the hours of Mon-Sat 10am-8pm and Sun 2pm-8pm.
It is NOT the item prescribed at Item 3.
https://www.legislation.gov.uk/uksi/2016/362/schedule/43. Now for the yellow line. This indicates that waiting, which includes parking, is not permitted from the back of the building line, including the footway(where the so-called parking place is located) to the centre-line of the road. This is within a CPZ whose restrictions are Mon-Sat 10am-8pm, Sun 2pm-8pm. Now where have I seen these hours before??
So, in combination we have:
A parking place whose boundaries are described by one set of longitudinal white markings, one set of perpendicular white markings and the kerb representing the edge of the carriageway. There are NO markings on the carriageway.
Therefore IF a motorist parks wholly within the markings, which they must, then they are IN CONTRAVENTION because the parking traffic sign does NOT permit parking on the footway and therefore the prevailing restriction is the 2-wheel footway parking sign which applies 24/7, BUT YOU HAVE TO PARK WITH 4 WHEELS TO STAY WITHIN THE MARKINGS!
Then we have the yellow line which prohibits parking for all the hours referred to in the traffic sign anyway!
The only lawful outcome is that NO-ONE can park wholly within the markings between the specified hours and that anyone may park a vehicle of no more than 1750kg unladen weight with 2 wheels only within the parking place during unspecified hours.
As most medium-sized electric vehicles tip the scales at more than 1750kg as do many IC-engined vehicles then these aren't permitted on the footway at all and would have to park wholly in the road.
And it looks like this nonsense has persisted for years.
Hey ho!