Outside it is the bleak midwinter. We are smack bang in the middle of some of the country's best agricultural land. But inside the cavernous warehouse where we've come, you wouldn't have a clue about any of that: there is no daylight; it feels like it could be any time of the day, any season of the year.
We are at Fischer Farms - Europe's biggest vertical farm. The whole point of a vertical farm is to create an environment where you can grow plants, stacked on top of each other (hence: vertical) in high density. The idea being that you can grow your salads or peas somewhere close to the cities where they're consumed rather than hundreds of miles away. Location is not supposed to matter.
So the fact that this particular one is to be found amid the fields a few miles outside Norwich is somewhat irrelevant. It could be anywhere. Indeed, unlike most farms, which are sometimes named after the family that owns them or a local landmark, this one is simply called "Farm 2". "Farm 1" is to be found in Staffordshire, in case you were wondering.
Farm boss's dizzying ambition. These futuristic farm units are the brainwave of Tristan Fischer, a serial entrepreneur who has spent much of his career working on renewable energy in its various guises. His ambition now is dizzying: to be able to grow not just basil and chives in a farm like this but to grow other, trickier and more competitive crops too - from strawberries to wheat and rice.