Confusion over wearing masks on Eastbourne buses

I have just been on the bus.

On the outside it says: “Face coverings must be worn on board.” Inside three people had no masks on and one was coughing and spluttering.

I was the last person to get off the bus, (at Wellcombe Crescent,) so I stopped and asked the driver: “Aren’t people supposed to wear masks?”

He said: “No. And I have no power to enforce it. They can do what they like.”

So what do you make of that? I give up.