Having different companies for different outlets is a growing issue in the property industry. There can be legitimate reasons for it, but it also can be used to make it easier to exit obligations on a particular property (and associated business) while keeping the rest open as a going concern.
Although, they may have missed a trick. Surely all their profits are from their special batter mix, and the IP from that can be held in a holding company in the Netherlands, or the Cayman islands. Top Gun UK ltd can then pay for the rights to use that IP at inflated prices and then they can avoid any corporation tax! Why hasn't someone thought of this?!

And the little stall on the Hayes declined in quality after it changed. They may be having trouble with their business but their fish and chips, and chicken curry half n half, still is the best in North Cardiff.