True, the UK is one of the few European countries where iOS is bigger than android just like in the US. I work in mobile management and we see those a lot in northern Europe. Where they're scarce is in South and East Europe.
Here in Spain no person has even tried to SMS me (which is the fallback for iMessage which I don't have) for 6 years or so :). I also don't have RCS enabled. It's all WhatsApp and Telegram.
The SE is also relatively expensive in Europe. And in Spain Apple seems to have completely removed all trace of the SE from their website. Strange enough. Didn't check other EU sites.
Here in Spain no person has even tried to SMS me (which is the fallback for iMessage which I don't have) for 6 years or so :). I also don't have RCS enabled. It's all WhatsApp and Telegram.