In reply to Simon1000:
E - grades are rubbish for sport routes (well bolted rock climbs).
It's E10 because of the sustained technical difficulty and fall factor shurely.....and now it has been confirmed.
I think only someone who actually leads the "bolder" routes can offer an opinion, plus they've got to operate around that grade as well....E9.....and Gresham is well qualified in that respect.
Until it is confirmed by another climber of a similar experience....the grade is only 'claimed to be"
Mick