Exchanging your BTC for cash as in actual banknotes means meeting someone in person.
There are a few sites that can help you to find someone in your area.
http://btcnearme.com/https://bitmarket.eu/faqThere is also the #bitcoin-otc and #bitcoin-otc-eu IRC channels, though these days you have to wait a week after registering and be able to follow the instructions to cryptographically authenticate to get in.