Are there any Poi workshops in the Hertfordshire/North London area?

Afraid I live in Scotland so not much help on the cles in your area! I found my cl just by asking around at local community centres, so could try that and see how you get on. I also use the internet a lot, the home of poi website has some great videos on it, plus you can replay it as often as you like! I've found this to get you a lot further to be honest, as once you've mastered what happens at a cl everyone turns to the internet for new moves anyway.