Don't know it, for sheer helter skelter fun bits of the B6318 take a bit of beating road runs alongside Hadrian's Wall, straight as a die being on the line of an old Roman road but on bits of it many years back I could swear I was pulling "G" going up and down through the dips
I think that A816 is a good road but its not a good place if you don't know it, well In my stupid opinion. I've been caught out on it a few times. Its got some brilliant sections and bends for miles then WHAM!!! a real tight changing radius turn, made me slow down BIG time...................once you know where the hazards are on it though I agree lots of fun