Ultimate Performance 5 Button Waistcoat with Wool

I bought a jacket and waistcoat seperately from the same suit, the jacket fitted OK but the waistcoat for that size jacket was about 4 inches smaller than the chest size for the jacket, the sizing did not match up. I am afraid that this is a big problem with M&S is that regularly their sizing is incorrect

Although the quality of the product is excellence, the process in ordering a suit to fit a gentleman who is 48" Jacket; 44" waist; XXL waistcoat has caused a lot of frustration in the way the suit has to be ordered on line. There is no waistcoat shown as part of the suit although it is advertised and displayed in the shop as a 3-piece suit. Waistcoat size only goes up to X-Large and have had to incorporate cost of dressmaker to revamp waistcoat to fit XXL size.

How can an XL fit my son who is medium to small -who does the sizing for the waistcoats. I checked the sizing for the online items and the largest is XL, why not XXL -It would be very helpful to us larger sizes. If you want proof of what I am saying I will take some photographs to make my point. Your online service is normally very could but this time you have let yourself down very badly because of the sizing. I will have to bring this back to my local store and get a refund, this is the first I've had to do this - lets hope it's the last.