I think it needs to be something for the entire Europe to get some real traction. If you keep it UK only, it'll continue being small and you won't get as much exposure.
I've been to LeWeb and the Web 2.0 Expo both in Europe. It's actually quite nice not to have to leave the country for once. This event was organised by TechCrunch Europe and by no means limited to UK attendees :P
Fear not - the kind of thing I did with GeeknRolla #gknr is something I want to replicate again. The trick is in the content and the vibe. Stay tuned... @mikebutcher
Most of the TechCrunch "UK" events have a decent pan-european crew around. Basically all of the European TechCrunch events (I've been to them in Prague, Berlin and London) are run out of TechCrunch UK. Despite us being based in Berlin, I'd have been at Geeknrolla if we hadn't had conflicting plans.