What do you mean there is no copyright of images in the UK - there is.

I very much doubt your actions were legal. As you were on private property your best course of action would be to ask the owners to tell the people to stop - they are entitled to ask that (though they are not entitled to delete the photos).

In a public space people can essentially photograph what, and who, they like. Personally if someone asked me (nicely) to stop taking photos if it was making them uncomfortable, I would, and am not sure why they didn't. Photographers currently get a raw deal and are suspected of all sorts of things for taking pictures nowdays (terrorism and various other heinous things) and we've all become very paranoid which is quite sad.

Anyway, we digress. Well I do.

This thread is very odd. I'm not quite sure what to say - I don't live near the nursery but the only conclusion I have reached is that some of the children in that nursery will have acted in a more mature fashion than a number of people have in this thread.