It seems like people don't keep homes/office buildings here as warm as I was used to in the US. I tend to be cold whenever I'm in someone else's house. I was at a New Year's party and wearing short sleeves (part of a costume) and the host had to give me her cardigan because I was shivering (there were other sleeveless people who seem fine).
In my office in the winter, I often have to work with my coat on all day, even with the radiator turned on all day. It's a tiny office, with just 3 desks, so it shouldn't be hard to heat up. The central thermostat of the building must be turned down too low for my comfort. Nobody else in the building is walking around with coats on (unless they are coming in or going out) or complaining about the cold, so it must just be me.
Sometimes I have to keep my coat on at the pub (once again, the only one).
Our heater at home is knackered (goes on for a little bit, but doesn't stay on) and I asked DH if we could get a little electric heater just so I could warm up until it was fixed and he said that was silly, I should just put goves on.
It's not a matter of coming from a warmer climate. I'm from New York City and used to colder winters than we have here in York. I'm just not used to being cold indoors.
I recently had my thyroid levels tested and they came out normal, so it's not that.