This answers a question that I often have in the UK - "Do I have a non-zero chance of being able to get (near to) to somewhere by bus?". There's no clear way to answer that since UK buses were deregulated in 1986 [1]. For me, this isn't a tool to plan an immediate journey. Yes, UK buses are sparse and unreliable in rural areas. Often it's quicker to walk 1-2 miles than to wait for a bus. The service might not even run every day. Personally I've had pretty good experience of occasional recreational travel on main bus routes outside of cities and towns in Wales which is why I am interested in this.
[1] https://www.regulation.org.uk/archive-buses.html