Unless that other driver comes forward there is nothing to be done other than being parked in a disabled bay without a blue badge of which this company own the car park and its not law breaking for anyone to park in a disabled bay especially if that bay is owned by a company otherwise private, Unless they have signs up stating different which is very unlikely as its a supermarket chain blah blah!
He will be told to be more careful by management and most of all to get to work on time and thats it sorry
rags his little shit box all around the place, dabs whilst driving and snapchats the whole episode. Has loads of birds round his house every week; mostly underage too.