Mostly gritstone here in England and Basalt & Granite in Scotland (the Cuillins on the Isle of Skye mostly). Nasty slate in Wales
I was into Free Climbing for about 4 years, then Free Soloing for about 3 months (I was a nutter and by rights should have gone the way of Stever Irwin).
It ended in '84 with an incident in Scotland (Sgurr Alasdair in the Black Cuillin on Skye) involving a sudden and unexpected terror of heights. First time ever I'd experienced it and I froze for about an hour at about 700m.
Then it started pissing down and it took me til dusk to get down.
After that I tried bouldering for a while but by then I'd lost the fitness and nerve.
Not climbed since
.
Joe Brown and Don Whillans were the kings of european Alpinism from the 60s to 80s (Don was part of the Brit Everest team but his drinking got in the way of climbing - he invented the Whillans Harness known as the "Beer belly Transporter")
La Patissier was queen of 80s and 90s Free Solo stuff - extreeeeeem (and fit as a Butcher's Dog)