What a beast- how does it compare with Rosedale Chimney ? (not sure of the name ) in the North York Moors? That one is the only hill on which I have seen professional cyclists use the 27" gear (get off and walk)
SH5831 : Steepest Road in the UK, Ffordd Penllech, Harlech.
PS Why is the name hard to pronounce? Its pronounced as it is written in about the only part of these islands where place names are easy to pronounce.