Best cheap, wildly available, second hand adventure bike in the UK?

[rory_gibson]

All –

Planning a trip next year. Will be heading East (through Europe, the Stans and maybe Mongolia/Russia) and will maybe even ship to South America (TBC).

Will look to travel on a mix of paved and gravel (and maybe even fully off-road where possible). I am competent off-road (albeit only on a 125cc to date). However, I want a bigger engine for the long stretches of boring paved road.

Do not have a lot of spare cash.

With that in mind..

What is the best bike, that is wildly available second hand in the UK, that has the speed for long stretches of paved but also allows me to go off road, that will not break my bank balance.

Ideally the bike will also (in order to priority): be reliable, can be fixed using parts found anywhere around the world, allow for storage, is lightweight.

I don’t care about how it looks.

Thanks

P.S. I will be buying x2 of the bike as I will also need one for my GF.