In reply to Michael Gordon:
As Snoop6060 says there's not a lot of choice and it's one of the best, most accessible and probably more reasonable of the routes at that grade (though not a soft touch).
Mutation at Raven Tor is reputed to be extremely difficult, probably 9a+, and extremely finger intensive. Northern Lights at Kilnsey also looks pretty tough. It took Alex Megos two days when he's regularly done 9a+'s elsewhere in a day. Ben Moon has spent far more time on it than he has on Rainshadow and still not done it. Not sure about North Star (Kilnsey). The crux of Big Bang is a slab, as is The Meltdown and we've only got one James McHaffie (who's done both). Hubble is more of a boulder problem and much less attractive a route than Rainshadow. Though it has had 7 British ascents plus Alex Megos. The Anvil is in Scotland is far from much of the country's climbing populace.