Teaching literacy in my area?

I live in Hampshire and close to the Surrey border. I would be interested in teaching literacy / reading. I have a teacher qualification and I used to tutor children in reading, writing and maths for quite a few years. I am considering taking early retirement, or working part time and am thinking about using some of my free time to help others. Any ideas about organisations that could use my help. Charity organisations, voluntary organisations, local government schemes. I would prefer to earn some money but I will consider other options. Has anyone got some pointers? Thanks!