The Focus breaks the law by failing to give way, argues with a vehicle 8x its size, then expects that bigger vehicle to reverse back AFTER its broken the law. Southampton is the worst city for self-righteous bullies with a deluded sense of self-entitlement.
Looks like this is a disabled bay - you can see part of the wheelchair symbol in the gap between the two. If that's the case maybe they parked there deliberately because the red car doesn't look to be displaying a disabled badge...
Awful driving. Reported. Hand in your licence.