I remember it being considered fine to give babies and small children a drink of tea in their bottle or sippy cup! I'm English too, living in Michigan now and I'm still a tea drinker although I do enjoy an occasional cup of coffee, it has to be tea to start my day or I'm all out of sorts!
Just found this thread....wonderful!, I'm from England and now live in Michigan, my favourite night time tea is Celestial Seasonings Sleepytime it's delicious, and I always sleep so well after I drink it