The pants he wears look to be a very close match to Banana Republic's Straight lightweight twill dress chino. It also features fashionable buttons to match the cuff links. The coat is trimmed with designer buttons, including 3 matching cuff links for each sleeve, it measures 54 inches in length (measured down center of back - from collar to bottom of coat).
This single breasted 4 button front coat has 3 outside pockets, 2 inside pocket, special vent in back, and is fully lined. Direct from their factory in Central Pennsylvania this full length suited trench coat mimics the fitted suited look of the one in this scene. As far as the trench coat there is an EBay seller called dpfsuits who offers a wonderful piece. Soft and silky yet mat in color, the fitted look of these are an amazing find for $30 a pop. A nice one for the money is the Men's Long Sleeve Performance Pima Polo Shirt from Lands End. The black polo is an easy one and there are countless options.
With his black long sleeved polo and charcoal trench coat Bond looked every part the spy we have come to love so much. If you are going to break into your boss' home the least you could do is be dressed as well as Bond was when he showed up to a surprised M.
