Removing the engine & box without a hoist is not too much trouble.
Support the car on sturdy safe blocks. I mean safe, you will need access underneath.
Once you have disconnected the prop from the diff, exhast, gearbox mounts, & steering shaft. Oh and don't forget engine wires + heater water pipes,clutch cable, speedo cable & fuel pipes.
Cut the front lower crossmember out. You can also cut out the upper front crossmember if you want more room to work.
Support the gearbox & engine sump. Remove the front subframe bolts. Lower the engine & box onto a suitable board, Jacks or pallet with wheels. Then just drag it out from the front of the car.
Personally I would rather use a hoist. But have had to take this route many times at the breakers.
I have a hoist but not much use to you all the way down in cornwall !!??