I think the fact that your willing to volunteer work will go in your favour, it shows your willingness to work without money being an issue. Alot of employers will look at that and be impressed, so keep doing that if you can. Looking for work is hard at the moment anyway, so keep doing what your doing, handing out CVs where ever possible. Its very disheartening to not have something come your way after so long, but don’t give up hope!