Well, blow me! The Traveller rolled past the 160,000-mile mark this morning, which I thought was quite something.
Then I had to take my brother to the doctors, which involved going down a steep hill into a small village, with a level crossing, which was down, so I decided to switch off the engine and coast down some of the way.
Level crossing finally goes up, so I went to re-start - no response from the starter motor.
So, I select 2nd gear, let it roll along a bit, then let the clutch out - engine now starts fine. Gently let the clutch out, and realised there's no drive to the back axle.
Tried another gear, but no joy; had to swiftly turn into a housing estate and park it up, with the aid of my brother pushing - he still made it to the doctors on time, just a short walk away.
Got the car towed home this afternoon, and after work, checked it out to see what may be wrong; started the engine (started OK this time), slipped it into 2nd gear, let clutch out - looked underneath, saw propshaft turning the diff input shaft but couldn't hear any obvious noises to give a clue as to whether it's diff or halfshaft(s).
Tried it in 4th gear instead, then the gearbox went into a spaz, whereby all I can seem to get is 3rd or 4th gear and nothing else.
Letting the clutch out now stalls the engine, as if there's a load but the car doesn't want to go anywhere.
So, looks like I'll be needing to examine both the gearbox and back axle now, to find out what's gone wrong...