The longest running on-going problem I have had with "thriving in the UK" is what do you do with those three little drawers on the washing machine?
Having solved the where-do-you-get peanut butter problem, plus the how-do-you-convert-a-driving-license crisis, plus why-do-I-have-to-pay-to-watch-TV, plus scores of others, I'm still left with the 3 little drawers on the washing machine...