IMO this has nothing to do with parcels and everything to do with:
1)In a special enforcement area a vehicle must not be parked on the carriageway in such a way that no part of the vehicle is within 50 centimetres of the edge of the carriageway.
The car was not 'on the carriageway' therefore the contravention, which is based in statute and is absolutely clear, did not occur, irrespective of the contravention description used by London Tribunals and the Mayor of London. Enforcement authorities should know the statutory provision which underpins this description.
The contravention can only occur if a vehicle is on the carriageway, which the CEO's photos show it was not
The authority seems to have conflated and confused the London-wide prohibition of parking on the footway, which refers to ROAD, with the TMA prohibition which does not. In the alternative, they seem to consider the DYL, which have been misplaced on the footway, to represent the edge of the carriageway, unless it is believed that it is lawful to place more than 30 2-feet long and 2-inch high unmarked obstructions in the carriageway. Clearly not. These mark the edge of the carriageway and what lies beyond cannot be on the carriageway.
The alleged contravention did not occur and the PCN must be cancelled.