Suit - BBGF
Shirt - Lewin
Tie - Andrew's Ties
Cufflinks - London Badge & Button Co.
PS - Robert Talbott
Shoes - Finsbury, Paris
Warning: Spoiler! (Click to show)
Thanks upr_crust for the feedback. The trousers are fitted so that they wouldn't fall down. But as a back up, it does come with side tabs or braces.