M&I visited Brompton 's factory in Brentford on a beautiful spring afternoon a couple of weeks ago. We were shown around by a welcoming Swedish lady and given a great insight into the working process behind the classic folding bicycles it produces. During our turn around the factory we met Alan, an engaging gentleman who is in charge of goods and quality control. Over the course of ten minutes, Alan showed us various testing methods and told us about his love for Brompton's designs. Below is the transcription of our chat. On Testing "We take various measurements - how far it moves sideways, length, roll... all sorts. It takes half an hour or more on this. And on this (new machine, pictured above) it takes 4-5 minutes. All the measurements get logged by the computer. We aim to do one in fifty (tests) on each part. We’re after a very accurate measurement. On an ordinary bike, if your alignment is 2-5mm, it’s not too bad. What a big bike business will do is bend it to put...