Hey, nothing wrong with M&S suits, Mr Cool. I like my M&S suit because I can wash it at home (no hassle or costs with dry cleaning). Also, it was quite cheap and is durable. At home I wear jeans and a t-shirt, so there's no way I'm gonna spend hundreds on a suit that will get all crinkled up and soiled when travelling in and out of London. :)
When I work from home, oftentimes (I love that word) I will take calls while standing stark b0ll0k naked in the kitchen, scratching my butt and putting a pasty in the microwave. Take THAT, Mr Public Sector Senior Manager sat behind a cubicle desk in his "Hugo Boss" suit!