Blimey, having seen the full strength CockneyB challenge,I shall have to revise the difficulty rating upward from 7.....
Complete tangent, but years ago I and two other saddoes formed a weekly challenge club, slowing increasing difficulty week by week.
I think I dropped out when weekly challenge was to knock one out in a local churchyard...I didn't fancy my chances of evading arrest if I did it during daytime, and I'd no intention of waking up in middle of night, clambering over church wall, etc.