Just thought I'd give an update and put a bit of closure to the issue that sent me to the health visitor clinic in the first place---
My child finally used the potty last night for the 1st time. We've been encouraging him for about 2 months now. I'm such a proud Mama! I swear, this is more exciting to me than his 1st steps...LOL!
And I totally agree with the advice about letting kids be kids, for sure!

I'm still a bit on the fence about even sending him to preschool, to be honest. I'm a (former) primary teacher myself and it seems like they start school as early enough as it is here in the U.K.. So there's a part of me that thinks that since he'll be expected to be in reception fulltime starting when he's 4 and a half, there's not much time left for him to just have fun.
If we did send him, it would strictly be for the social opportunities. But I think I'd still like to have the flexibility to get up and "go" while he's still young and excited about everything and not really needing to go to school, at least by any sort of legal requirements. So we can do fun things like fly to the States for a month (like we're doing in a week's time) or take the train to London for the day, etc.