As a result of reduced demand for travel and staff shortages, most bus companies are running reduced timetables from 23 March. You can find the latest updates at getdown.org.uk/bus/corona, and I will do my best to keep it up-to-date with news as it comes in, but if you have any specific questions then please contact the relevant bus company.
Most operators are now allowing passengers to use ENCTS passes at any time.
You can reduce the risk of spreading infection by using contactless payment rather than cash wherever possible. Stay safe.