There is no "recommended route" in VFR; not in the UK, anyway.
You get the CAA 1:500k VFR chart and draw a line from A to B. Then you see whether that line intersects any controlled airspace (CAS); if it does you drag it over to some suitable waypoint to avoid that CAS. Same with danger areas, generally.
The choice of waypoints depends on how one is navigating. If doing it "traditional WW2 style" then you pick unambiguous land features e.g. weird shaped lakes. If doing it with a GPS then you pick items like to be in the GPS database already e.g. VORs, airway intersections.
Then, for each leg, you look 5nm either side of it for the highest obstacle, add 1000ft to it, and that is your MSA for that leg.