Britain is the most overweight/obese in Europe , but yet, it's a struggle to find plus sized clothes (especially good quality ones)
Wherever you go in the world, you'll find fat shaming. I can't cushion it, really. You'll have moments, minding your own business, and then you'll be walking along the road and some teenager/early 20s year old men will call from the car calling you a fat cow (This actually hasn't happened in Scotland to me, but has happened in England,but could could happen anywhere) And you'll get some prat who will think they can call *you* out for being not only American, but a fat one too. Dicks. Uncalled for. Luckily ,these moments are few and far between.
Like anywhere in the world, you'll have great doctors who see you for you and you have other ones who will tell you to lose weight for your ear infection
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People also love to tell you how to diet. Actually Britain loves a diet! Tabloids are full of whatever diet helped whatever celebrity.
It's not always a matter of healthy eating (oh if it were that simple). Weight loss surgery isn't available much on the NHS, and it's definitely not an easy way out. But the tabloids will tell you so, and it's another source of fat shaming. Fat shaming galore in the tabloids. That you're a drain on the NHS. And the taxpayers money. Grrrrrr.