Oh my days. This worked a treat. Left the nut so it was just proud of the shaft (oerrr) placed a 24mm socket upside down on top with small extension bar inside and whacked it with a hammer. 1st few tries and a couple of Bakelite bits fell off as expected. Was about to give up and thought try again. Gave it a few harder whacks and steering wheel came loose. Absolute star, thank you.
