As someone in an FE environment (but fixing them, not teaching) colleges are cerying out for people to teach, particularly in adult ed . It is even the basic CLAIT / stage1 that is most in demand, and if you can offer a speciality so much the better. Although is is useful to have a Cert Ed, it is not vital for post 16, and although money is relatively low £20-25 ph with no holiday pay you 3 years out od ed should not be a major prob - MS products haven't changed that much, and most colleges will still be teaching Office 97.