I have now taken the seed out of
http://www.balesfield.co.uk/temp/seed2.jpg and have found it to
somewhat similar to a small walnut seed but a with very much rounded 6
lobed star crosssection.
I believe that this could be Davidia involucrata or the "Handkerchief
Tree".

Can anyone confirm ???

The seed of http://www.balesfield.co.uk/temp/seed1.jpg are paper thin
almost like a fir tree, but rounded like an 'honesty' seed with the
seed part offset to the side. The seed head is somewhat similar to a
beech seed head, but think of it like a 'Terrys chocolate orange' and
in between the segments are these thin seeds.