Hopefully visiting relatives in a couple of months and may get chance to gather some more Hazel then, as I know the surrounding countryside there is abundant with it. It's also easily accessible and relatively cheap to buy, with plenty of variety and production of nuts - so I may just invest in a few plants for the garden also.
If you do plant it in the garden, plant it somewhere that it cannot spread. It spreads by the root and can take over quickly and it takes a great deal of effort to chop out the roots. If you can make a concrete planter and plant it in this, that would be a great idea.