In reply to Rapsling:
The tallest routes on Eastern Grit are in the quarries at nearly 30m, and there are a few routes there that can be done as multi-pitch outings without feeling too contrived, Great Slab, Lyons Corner House, The Scoop, even Great North Road at Millstone, plus Pulpit Route, Great Harry and a few other at Lawrencefield. Then there is Suicide Wall at Cratcliffe plus quite a few at Black Rocks; Lean Man's Climb etc.
Chris