This is an illustration Gerald Legg posted a while back that's abit better than they key, also a good photo by Paul Richards but more comparison photography would definitely be useful!!!

We'll he seems to be a pseudoscorpion magnet at the moment so good idea!

If you get a specimen always happy to have one sent to me for examination. You need to get the angle exactly right to see the key features

I've had Chyzeri three times, twice form piles of hay and dung from stables and ones in compost, they are abit of a nightmare pair to deal with!

I would say Lamprochernes sp looking at the photo... All three can occur in dung but Lamprochernes chyzeri is perticulerly associated with it and I'm not sure has been recorded in Suffolk. Happy to work from microscope images to try to ID it if you retained it!

Yes definitely a Neobisium sp, given location/habitat and what I can see in the photo I think it safe to say Neobisium carcinoides nymph

That would be great, thanks!