Good idea. Is it fairly sunny? decent soil?
It's certainly not too late to grow stuff for this year. Radishes will mature in 4 - 6 weeks and lettuce and early carrots (try Early Nantes or Amsterdam Forcing) by October. Maybe beetroot as well although they won't get enormous now.
And then you can buy some spring cabbage plants and put them in - they'll mature in April - May. Then in Sept/Oct you can sow broad beans (Aquadulce Claudia) to overwinter and plant garlic and maybe some overwintering onion sets too.
Good luck and good gardening as someone says