https://www.streetcheck.co.uk/
StreetCheck pulls together in-depth information about property and people across the United Kingdom. We show you everything you need to know about your area, whether you are looking to buy, rent or are just being nosy! Best of all, our service is completely free - just enter a postcode above to find your information.
https://maps.cdrc.ac.uk/
佢呢個計overall,including富人區and治安,越深綠色越好