Here are some art-related uploads to Flickr.
Draw: Gesture. Class described previously.
Recent Holborn and ULU drop-in classes.
There of more of each sort in the respective sets.
These are flagged as Moderate in Flickr, so you'll have to log into your Flickr account and set your Safety preferences accordingly, if you want to see the nudes.
Tutored class : Drawing in the British Museum.
The concept of this one was a more experimental approach to drawing, as you can see. Working from the objects on display, and catching a couple of visitors.