Some of things it shows for Manchester are not buses (i.e. metrolink). Where does the data come from? Edit: also Flixbus or National Express are arguably not a bus services either
For Aberdeen it shows me a bus to Shetland, quite an exciting prospect
Other websites for "bus times" that show the NL2 ferry service from Aberdeen to Lerwick say their data comes from the Traveline National Data Set (TNDS): https://www.travelinedata.org.uk/
> TNDS contains public transport timetables for bus, light rail, tram and ferry services in Great Britain.