An Airalo eSIM for UK-only uses "O2-UK" and "Three UK" networks. An Airalo eSIM for Europe uses, in UK, "EE", "Hutchison 3G", and "Vodafone" networks. How significant is this? For my upcoming need, I could buy a UK eSIM and an eSIM for the single other country I will visit for $2 more. (The data limits will surely meet my needs, with the slightly more expensive option even more surely meeting my needs.) I will mainly be in urban areas, except for visiting some sites on Hadrian's Wall. Recommendations? Thanks.