For anyone who doesn't know, Borough Market is London's prime 'foodie*' destination. The market dates back to at least the 12th century. Despite being overwhelmed by tourists and egotistical morons making YouTube videos and mispronouncing 'borough', it does still have amazing food.
They have published a guide to spring vegetables, which is available to view or to download in PDF format, free of charge. Here. Click on the download symbol in the top left corner of the screen. Information and some very attractive recipes.
* Not my description! Loathsome word!