I'm going on a 2 week tour through 8 European countries. I have lived in the UK since birth, do I need a visa?

if you have a british passport then your allowed to travel too, from and through any european country as you wish - a perk of belonging to the E.U. :)

If all the countries are in the EEC then no. If not you will have to look up visa requirements on web for that country - most of them dont require visa for UK passport holder. And don't forget the passport !

if you are going through countries of the european union you dont even need your passport - but it would help, if you are a genuine british citizen (not one of these 3rd gen islamic terror cell types) then you should know this already

It depends on which countries you're visiting. If you've got a British passport then the answer is "no" for all EU countries, and pretty much any other European countries except Russia, Belarus, Ukraine, and Moldova. If you got to Turkey then you buy a visa at the border for cash (£10 for UK citizens, I think - different prices for different citizens!). Contrary to Zoltan Socrates' answer, if you're a British citizen then you DO need a passport to travel to other EU countries (except Ireland) - EU citizens need either a passport or national ID card to cross borders, and our new government is just abolishing our ID card (not that many people had been foolish enough to buy one anyway). [@GerdP: Thanks, I wasn't sure about Moldova, and Ukraine must have changed since they hosted the Eurovision Song Contest - visa rules were specifically suspended for that!]