Jezza, I have a lovely chum in Macclesfield, and her partner is a very keen 'turner', and shows and sells all over The North!
I've sent her an email just now, so may get an answer! Can you hang on for them for a day or so?
I saved several great big chunks of 900year-old yew once, and they took them all the way home in a suitcase! The last lot were better carried in a van as there was a tidy pile of the stuff, thanks to some high winds a year or so ago...