Zoopla Heatmaps.
Zoopla have introduced a new way of looking at house values. They’ve invetned a heatmap of UK property values.
You can zoom right in and see all the different roads at different colours.

It’ll show you road by road when you’re zoomed in. Use this maybe in conjuction with Police maps side by side and you’ll get an idea which areas are nice! Of course there’s no substitute for actually going and having a look and sometimes the houses being dearer just means they’re bigger!
When you’ve about 4 clicks out from maximum you see the house prices on the map too.

Oh my! I’ve never seen a 
I don’t like this style of advert. It doesn’t list the property – just telling you there’s an expensive house somewhere that you might like to buy if you have more than £3.5M to spend.
If you don’t like tidying up when you have viewings then you’ll perhaps appreciate this untidy house.