Old cobbled farmyard - Ideas?

[PRHoughton]

I’ve bought an old farmhouse and have discovered it has a ‘cobbled’ yard underneath the grass and moss. I’m not sure how best to bring it back to life. Help!
I’ve spent perhaps 4 hours so far ‘jet-washing’ the mud/moss/grass off the first 10%, so a long way still to go. In places the rough setts are neat and tidy, in other places they’re pretty messy and there are some places where there are significant dips. I’m not after perfection, but I’d love to tidy them up, sort out the holes, and protect them for the future, perhaps with a resin mortar. They need to take the weight of cars and vans. I also don’t want to spend the earth!
Ideas please. Thank you!
Photo link here: https://www.dropbox.com/s/h7zle52hvfiyf ... s.JPG?dl=0

[digerjones]

You may be able to hire a rotary power brush on a digger bobcat ot tractor. Get them cleaned off and start tidying the area you want to use most first