What I’ve measured, seems a large. Jacket measures as follows:

Length from top back to bottom 30”

Shoulders across 20”

Sleeves 25”

Armpit to armpit 49”

Trousers are 40r, leg length from waistband 40”

The Aquascutum London Men's 2 Piece Wool Blend Suit in Black Check is a sophisticated and versatile choice for a variety of occasions from formal events to casual outings. Crafted from a high-quality wool blend with a touch of polyester, this suit exudes a classic British style with a modern twist. The jacket features a three-button sleeve button style, notch lapel, and double vented back for a sleek and tailored fit. The pants are designed with a straight leg style and flat front, perfect for a smart and polished look. Made in the United Kingdom, this suit from the renowned brand Aquascutum is a timeless addition to any man's wardrobe.