When is ‘made in Britain’ not made in Britain?
All products have a commodity code and the country where the commodity code last changed is the country of origin. So if you bought a greenhouse, for example, this is entirely made from aluminium extrusions and glass, the glass could come from India and have a commodity code of X and the extrusions could come from China and have a commodity code of Y but when both the boxes are strapped together in the UK the greenhouse has a commodity code of Z and it can claim to be Made in Britain. Quite obviously none of it is made in Britain and you are not helping British manufacturing by buying it.