Spalding Plant and Vegetable Auction in Lincolnshire is the oldest market of its kind in the UK, having started in 1948. There are three sales a week, selling as many as 1,000 bags and boxes of veg and up to 16,000 plants, shrubs and trees in a day. It needs two auctioneers to do it. The auction is here for a reason - a quarter of all UK veg and plant production happens in the Lincolnshire region, and in some areas one in four people work in agriculture.