Don't remember updating you on the tunnel cleaning but I finally did it a few weeks ago. I roped my husband in (nice romantic afternoon eh?!
). Honestly I have never seen so much poo in all my life! Definately wise to pick a dry day after many dry days as when we tipped up on end it was like one of those rain maker toys...all into a huge bucket. Went down the tube tapping with a hammer to lift the bits stuck in the grooves and I think most of it came out.
Used some on the garden as fertiliser and the rest to compost.
It wasnt as bad as i thought in the end