To keep this as brief as possible, I am from Europe, came to UK for university 12 years ago. Made a family here and have a lovely life with lots of friends, firmly integrated in community, great part of the country etc. etc. my DC loves their school and has friends.
It's just that DC is 6 now and I am thinking if we don't move back soon it'll be too late, they'll be too settled here etc. I've got a job that fits perfectly round school and DH has a great job too.
Downsides, I miss my home country and my family there. It's a wonderful place with great scenery, jobs are more sparse though, but it could be doable. But this is literally it- we have everything else going for us here.
What age is too old to move with little children?? Would you even leave "just" to be nearer family? We go there every 3 months to see them anyways and usually most of the summer holidays.