In reply to Calder:
I would say that the three lines that we climbed were the most obvious challenges. Downhill and right of the main face there is the potential for some highball stuff, one line in particular looks very good, about 8 metres high, but also looks very hard and will need a bit of a clean. About 100 metres behind and uphill of the main wall there is the potential for some good bouldering, quite a bit actually, but it will be one hell of a distance to carry a mat!
The best way (and quickest) to approach Raven is by montain bike from the Bowness Knott car park in Ennerdale. I reckon about an hour from here (about 35/40 mins on the bike then a 20 min slog up the slope to the crag). Its a good 2 hour hike from Buttermere, and probably about the same if not a bit longer on foot from Bowness Knott. You could always stay at one of the youth hostels in the valley which is handy and is what we did on the second visit!