In reply to craggy11111:
Hutton roof is ok. Bit of a wander through some thick undergrowth full of interesting bugs and blackberrys to pick. The bits around the crag are nice for scrambling on and a limestone pavement of the top.
The walk up to warton pinnacle (and maybe another one up there?) is quite nice if you set off from warton small.
It's hard to find graded stuff for 4year olds. Ours has his own climbing wall in the garage, but even grade 1 scrambles have big holds too far apart for him. A walk with big rocks on the path is a scramble for a 4year old.
Steve