Moon Grower is the person to answer this question - and she's written a blog for you :-)
http://www.growsonyou.com/moon_grower/blog/11676-what-to-do-and-grow-in-your-veg-garden-in-september

Thanks Beattie

My pleasure MG :-)

It is surprising jut how much you can grow at this time of year, especially if you live in the sout hof England rather than the north of Scotland.