The SMC Guidebook has this route graded at VS!
OERees - Lead O/S - 29/Jun/12

Fun but far far too serious for severe. Top out is very worrying!
Liam Ingram - Lead O/S - 10/Jun/12 with Catrin Nichols

Hidden - Lead dnf - 10/Jun/12

catrin289 - 2nd O/S - 10/Jun/12 with Liam Ingram

Crazy position!
Cardi - 2nd O/S - 22/May/12 with Jon W

Wow, what a superb route. Definitively graded correctly in the guide book,(GL)a bit iffy on the exit to the belay at the top but good gear. tip - go straight up from the 1st belay!
MoWalker3 - 12/Apr/12 with Cormac

bpmclimb - 2nd O/S - 01/Aug/10 with Clare & Sandy

This is a great route but extremely serious. I agree with the comments made below, VS seems more likely. Lots and lots of suspect rock on this, accident waiting to happen. Topping out is a nightmare, stood on loose boulders and pulling on grass. Despite that, I'd say it's a contender for the best chimney route I've ever done.
Glyn Davidson - Lead O/S - 02/Jun/10 with Ali

Ali H - 2nd - 02/Jun/10 with Glyn

Without a doubt the most dangerously undergraded climb I have ever come across. Severe 4a for the second pitch?!?!?! What?!!!!!! Definitely some 4c moves and a scary situation to be in given that the rock is loose in places and very lichenous. Beware!
iceicebaby - 2nd O/S - 29/Jul/09 with Sam Wood

S 4b- dangerously undergraded. It's VS 4c (top pitch- not 4a), IF you can bridge, back and foot, climb lichenous slippy frictionless loose and flaky rock, and at times near vertical grass and ivy. It gets a star for the novel pinnacle and excellent line, but looses 2 because of the rock, lichen and other issues. I was gripped out of my tiny little skull on this and stacked it with gear, and it's 4 grades below what i can lead normally! If you're just leading severe- beware!!! S.
tubby two - Lead O/S - 29/Jul/09 with Tinky

Led P2, totally awesome. The topo in Scottish Rock is slightly wrong, the route starts up a chimney by a short grassy ramp and just right of a 10ft leaning pillar at the base of the crag, and the "ominously-poised" flake is at 5, not 15 metres.
victim of mathematics - AltLd O/S - 17/Jun/09 with crossdressingrodney

crossdressingrodney - AltLd O/S - 17/Jun/09 with victim of mathematics