Chris H.
Yelp
The London Glassblowing Workshop offers one-day introductory glassblowing lessons once or twice a month. It's a great day, you learn and make a lot (I made 2 paperweights, a dish and a vase). They really help you to make pieces in the styles and colours that you want, and there's only 2 students per instructor. Next door is the Peter Layton glass gallery, for inspiration.