In reply to Ben FR:
Out of interest, what makes you want to travel all the way from Grenoble to climb at Stanage?
Perhaps depending on what grade you're climbing at, I think it's worth visiting Stanage and the gritstone crags when conditions are best for climbing - spring or autumn. You do get good conditions in summer too, but you also get humid, sweaty days when the climbing is impossible and the midges are out. This completely ruins the experience.
The climbing, as you probably know, is generally rounded friction climbing on very hard sandstone. It's not that dissimilar to other sandstones really so don't expect to find something completely amazing that you've never experienced before (unless you've never done any trad climbing on outcrops). It is great in its own way, but the routes are very short and it's often rather like bouldering: sometimes just a couple of hard, technical moves which might have good protection or might not.
Personally if I was coming to the UK to climb in summer, I wouldn't bother visiting the grit, instead I'd climb trad routes on the wonderful sea cliffs, but each to their own. Just as long as you don't have unrealistic expectations...
