Wild Country Organics is run by Dr Adrian Izzard, who has pioneered growing organic vegetables and oriental leaves from Green in snow to Komastsuna, in glasshouses without using artificial heating. The farm is located seven miles south east of Cambridge in Abington and has been organic since 1988. In the summer they specialise in producing a wide variety of organic tomatoes, cucumbers, peppers, aubergines, lettuce, pak cho, herbs and salad leaves.
They're still with us in winter, with rocket, pak choi, celery, mustard greens, various herbs; coriander, sorrel, parsley, land cress, etc. and they've moved into growing winter veg too. Because the quality is so high, you'll often find that your bag of leaves will last the week - if you can keep them that long.