To one side, against the back wall, there is a rickety wooden table with a smorgasbord of test tubes, beakers and other scientific paraphernalia. There are also bags of white powder and bottles of oil. These are the raw materials - ordered over the Internet from China - that are needed to make anabolic steroids. I soon find out that the expertise for this criminal venture has not been learnt at a university, or even in a school science class but has been passed down by word of mouth.
None of this matters to the customers, who will inject the testosterone propionate that is being made here into their bodies. The users, who are predominantly young men on a quest for bigger and better physiques, do not care about quality control. They just want results in a society where physical appearance is increasingly taking centre stage.
When we meet Louis he is getting ready to go out on the town with his mate Ben. Both men are doing sets of press ups and dumbbell exercises in front of a mirror. Their aim is to push blood into their muscles and get a 'pump' so they look as big and full as possible in the pubs and clubs of Leamington Spa.