The other list they put out is called the Clean Fifteen which provides consumers with a list of foods that are safer to buy and not sprayed as much with chemicals.
These two lists give consumers the ability to choose their food for better health and for those on a budget to know when they should consider buying organic produce rather then the standard crops. The most economical way to purchase seasonal organic produce is through a box scheme. There are so many in and around the Witney area that you wouldn't find it that difficult to make the switch. Here is the updated list as of March, 2017. (based on US Crops - many of which are similar in the UK & EU)
KALE & COLLARD GREENS
Support your local farmers, organic suppliers and box schemes all doing their part to keep organics on our tables.
2. Kurstin, M. (2015). Another Reason To Eat Organic. [online] EWG. Available at: http://www.ewg.org [Accessed 2 Jun. 2015].