Thank you. I was more interested in the similar claim made by the same poster that Simpson brushes are 'largely manufactured in China now'. I own several Simpson brushes and place high value on them being manufactured in Great Britain and formerly in England. I would be disappointed to find this was not the case but I suspect it is not. It seems to me to be nothing more than unnecessary speculation without any foundation. Poor form in my view.
According to their website, Simpsons are still made in the UK. It sounds like the deal to sell Simpsons was based on a proviso that production had to remain in the UK and use traditional techniques.
Hand Made In Britain - Our Heritage - Simpsons - https://www.simpsonshavingbrushes.com/our-heritage/hand-made-in-britain
They have it plastered all over their website, so trading standards would be all over them in the UK if this wasn't true.