Where was Unforgotten on Masterpiece filmed?

British television drama

Unforgotten on Masterpiece (2015–) was filmed in London, Liverpool, Brighton, Westminster, Royal Borough of Kingston upon Thames, Cotswolds and 1 more place, 7 places named in its Wikipedia article, in the United Kingdom. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data