Can I park for 20 minutes to unload without paying?

This only applies when a motorist is engaged in a continuous loading or unloading activity. A motorist has up to 20 minutes to unload, not 20 minutes to park, having unloaded.

When loading and waiting restrictions are in force at all times, they are marked by double kerb chevrons on the double yellow line – there will not be an accompanying sign. When waiting is prohibited at certain times, there will be one kerb chevron and a sign advising of the loading/waiting restriction times.

See Key Case:Alan Bosworth and others v The London Borough of Tower Hamlets and others ETA (2015).