Veggie Dave

Generally, places people use to practise are kept pretty quiet to stop them becoming like Box Hill and all the other 'police catchment areas' that masquerade as bike meets

If you're not looking for an established place then check out any industrial estates and country lanes near you - there's always somewhere to play if you look hard enough for long enough. I guarantee you'll find somewhere eventually. But if I hear of anything, I'll let you know...