I run a fortnightly life drawing group at my studio in Barry. Sessions are untutored, though provide a very supportive environment for artists of all levels of experience.
In spring/summer we work (with a teabreak) from 2pm to 5pm, and in autumn/winter 1pm to 4pm - both with lunch beforehand and materials provided, for those who would like them.
Further information can be found here, and I update regularly via a Facebook page and mailing list. If you would like to be added to that, please let me know.