IMO, It is not a 'suspension' sign in the accepted sense i.e. suspending the use of a parking place in exercise of powers under a Traffic Management Order, it's a 'traffic sign' purportedly giving effect to 'The London Borough of Newham blah blah Temporary Prohibition of Traffic Order 2026.
IMO, contravention did not occur because the use of the parking place was not suspended, all the Order does is 'restrict traffic access along.., it does not suspend statutory parking controls.
'7)An order or notice made or issued under this section [14] may—
(a)suspend any statutory provision to which this subsection applies'
An Act to consolidate the Road Traffic Regulation Act 1967 and certain related enactments, with amendments to give effect to recommendations of the Law Commission and the Scottish Law Commission.