Thanks all for your feedback... I have now found the problem component. I decided to start removing things from the scene until it would not hang. It was found very quickly as I thought I would start with the hair (MeInOhio indicated it could be a problem) and it was the Mihai hair. Rendered fine after removing it. I shall investigate its potential to be moved and post back with the results, but in the meantime will just resintall it into its default location.