Exercise bike by JTX Fitness. Has been comfortably used by people between 6'4" (190cm) and 4'11" (150cm). Incorporates battery powered speedo and heart rate monitor - might have a couple of batteries to spare.
Resistance is adjustable by friction but it has a very heavy flywheel, visible in picture, which give it a natural feel. It has standard fittings for pedals and saddle, so they can be changed if you have particular preferences there.
It's *extremely* stable in use, but that also makes it very heavy, so it'll need a van or large estate car, and it'll take two strong people to load and unload. I'm happy to be one of those people at this end.
Exercise bike. (Oxford OX4)
This offer has been gifted to someone and is no longer available.