Do you use Citymapper on your smartphone to plan journeys?
If you, you could become frustrated that journey results shown are those which involve a train, tube or tram – when you want to use buses only (especially if you rely on the ramps to board and disembark).
Citymapper still has the option to show bus-only routes !
You just need to scroll down the page to find this section:-
Really good information can be found on site.