Second this. Also check if your degree qualifications and professional accreditations are accepted in the country you want to move to.

A friend qualified in physiotherapy in Portugal, had no issue setting up a practice in Germany, but the NHS forced three years of requalification on her when she moved a decade ago.

Have you thought about moving to Wimbledon?

Pick a subject you both like and are fantastic at (world level great) then check university links from the UK institution to the country you want to live in.

Get onto the exchange programme. Study there. Look for post-grad options in that country leading to either local job at senior level intake, or PhD and post-doc work there.

I don’t think many other Brits who’ve never left the island would understand how tempted I was to let the Dutch try deport my British/French dual national kids when we were resident there because I hadn’t bothered with the art 50 paperwork for them (given that the gemeinde had them registered as dual nationals) and the burger registration database was only capable of sending one nationality to the immigration department and the town hall team responsible for making the change to make the French nationality the primary one just plain refused to make the three keystrokes necessary.

Firstly, pick where and how you want to live.

Visit there a couple of years before the move. Alone and with the kids. Get an idea for the local schools, visit the schools and confirm places before your move, leverage the private system if in doubt. Identify where and how you’ll be financing yourself. Look at visa constraints.

Then look at the local activities and pattern of migration - are there new adults with kids the same age moving to the place where you want to live (so you don’t just have to break into existing friendships dating back to pre-school) are there activities that your kids would like to do there. Are the local population engaged in these activities?

Then look at your support network, how will you balance work life, school/afterschool activities, logistics. What support will you need, language, au pairs, parents, other parents etc. are there welcoming meetings and times in the year when it’s best to arrive (school pattern etc)

What will you need in the first 18 months that the kids will be getting settled? How distant is the culture from your own (not just national cultures, but professional experience, income distribution, social norms of behaviour).

Ask for help in the local population and start integrating / making friends before you move. (Clubs and societies help with this).