Yep I think above covers everything that's required, definitely BMI is taken into account, if your BMI is over 28 I think your classed as morbidly obese, whilst squeezing you into the cab shouldn't be a problem it's the prising you out at the end of shift which would probably cost scotrail millions in delays.
25-30 ish in BMI is classed as overweight, but above that is obese. To be honest it’s not an accurate measure of one’s fitness. People view being obese as being unhealthy and excessively unfit, whereas it’s not that bad really.
At GWR, up to 32 in BMI is ‘okay’, whereas anything higher would be looked at and judged accordingly. I know people with high BMIs where it’s muscle rather than fat, so naturally it’s nit accurate to measure fitness solely on BMI. Because of the nature of train driving, and the nature of the fact that you’ll be sitting down a lot, it’s in their interest to take one’e Fitness in to account, it unless you have a BMI if 37 or 38 and are in poor health, it’s unlikely to be much of an issue.
My BMI was 32.7 when I had my medical and the quack said he wanted me to lose half a stone by the time I started which was about 3 months. He said he’d see me in 3 months but signed me off as fit anyway (he was never gonna see me in 3 months as that would have been the start of training). I lost half a stone in about a week prior to starting anyway, because I wanted to. I’ve now lost a stone and am just fat rather than obese with a BMI of 29.