Waist - 17.5 inch /44cm (measured across front of jacket- so waist approx 34")
Top of collar to bottom of jacket - 25inch /63cm
Sleeves (top of shoulder to cuff) - 24inch /61cm
Under arm to under arm - 19 inch /50cm
I'm a size 12 and it fits me fine with room, unfortunately just too short for me.
Bought 2nd hand December time, only used a handful of times since I've had it and in perfect condition, still has spare button in bag inside the jacket.