I'm loath to act before the OP has bothered to answer.
But if pushed...
When are 'Match and Event days'?
A parking sign is formatted as follows:
Top, upper or only panel: The restriction(in this case parking, but it could be loading or similar) and its scope, in this case the 'permitted parking expression' of 'Match and Event days'.
But they're not defined. Not every Mon, Tues, Wed, Thurs, Fri, Sat or Sun is a 'match or event day'.
So, WTF does the top panel mean in isolation?
IMO, nothing.
The sign is meaningless as it stands.
When are the 'Match and event days'?
Or is a motorist supposed to guess that as the top panel is exposed then it's a 'Match or event day'?
Good luck to the council succeeding on this at adjudication.