I remember years ago, well before my relocation to London, I was just visiting the city with my sister as a tourist. It was spring, and we absolutely would have missed our flight back to the States had the receptionist at our hostel not happened to mention that morning that the UK’s clocks had just changed overnight. Gah! Thank goodness for that!
We hadn’t considered a time change simply because clocks had already changed in the US. The discrepancies between Daylight Savings Time changes across different countries is a good thing for you to note, then. Yes, when you’ve moved to London, you’ll hopefully be in the know when you hear everyone talking about it, but it’s also worthwhile to take advantage of any windows in which the time difference between London and home is shorter.