Darren, just click this link, read it, and then go on the next Thursday night. You'll meet a bunch of people, and see what's up. The pace usually isn't too hard, but If you can't keep up, that's fine, you'll know what to aim for and then you can try again in a few weeks/months time.
we skate! also, try and grab a phone number. we've had newbies get lost and we wait for half an hr literally on the otherside of a wall and they give up and go home :(