Working full-time in London has its benefits. One of which is a life drawing class in Farringdon recommended by my old University tutor.
The last time I did any life drawing was a year ago which was free to join as part of univeristy events: https://theinfiniteidea.wordpress.com/2015/03/31/life-drawing-part-2/
The sessions are run by Adrian (http://www.adriandutton.com/), these sessions are on everyday in London in different locations the price is cheap for one-offs and drop ins (£8) and you can buy sets if your a regular. I really recommend this sessions as they are laid back, you can request for some tutoring by the session leaders, if not just pop along (materials are provided) and just draw. Here are my favourite outcomes: