You might be interested in DTE Gaming. We're a smaller guild planning to take part in both the PvE and PvP elements of game. We're 18+ but our members are a variety of ages.
The clan itself plays several games, but we've got quite a number focusing on GW2. We're looking at having about 30 active members playing GW2. Our main aim it to have fun as group, but we've got quite a few members interested in PvP in particular, so we'll be seeing how we can do there, too.
Here's a link to our recruitment thread here if you want to read more, and a link to our IRC channel if you have any further questions, or want to meet people: