Watched this last night. Really interesting. My ears pricked up when they mentioned Dundee, which I've just returned from. I wasn't aware Dundee still had any textile industry left. I did wonder how they managed to do all that to fabric and not get any creases in it - now I know - it's never, ever folded!
In about 1990 I visited the Kinnarps furniture factories in Sweden (one does chairs and the other does everything else that doesn't include upholstery). They had a similar fabric cutting table arrangement to Barbour but the cutting out was done by computer-controlled machine, not by a bloke with a saw and a chainmail glove! I was surprised it was so manual.
I loved the welt pocket making machine - removes a lot of guesswork - and I suppose the laser guidelines remove the need for unnecessary piercing of fabric prior to final stitching.
While I can see the economic appeal of Adam Smith-style working arrangements, it would bore me to tears to spend my day doing nothing but sewing on pockets!