I lost faith with M&S when their clothing started to be made overseas.
Always first place to go to buy my undies, but the fit varies between items, even if in the same style. Being charged extra because I wear larger than a DD is wrong and don't talk to me about knickers! If I wanted to wear g strings, I'd buy them - but even with full briefs, there is little difference in width between the front and back, so hopeless if you have any kind of bottom!
M&S always used to be renowned for it's more generous fit , but no longer. What is worrying is that those in the executive depts don't seem to realise that the poor quality and poor fit of the clothing is one of the main reasons that their profits have been dropping - they can rebrand as much as they like, but unless they actually get their clothes back to the quality as it used to be, they might as well give up!