Farmers in Wales are pretty canny and they have some unique advantages due to the hillyness. Leasing out land for mobile towers is one option, as someone said a

Farmers in Wales are pretty canny and they have some unique advantages due to the hillyness. Leasing out land for mobile towers is one option, as someone said above, but I've also seen them group together to build small hydro power installs in their streams, or set up solar panels, and sell that power to the national grid. Sheep are pretty much all you can raise due to the geography of the place. Wales is poor, outside the cities. You can still buy a house for £10k here (it'll be shit obviously). He'll likely get some subsidies and his pension now too, and I imagine he probably trades for some of his food. Eggs for fish, that sorta thing.