Where was The Six Thatchers filmed?

2017 episode of Sherlock directed by Rachel Talalay

The Six Thatchers (2017) was filmed in London, Marrakech, London Borough of Southwark, Jemaa el-Fnaa, Pinewood Studios, Vauxhall Bridge and 4 more places, 10 places named in its Wikipedia article, in Morocco, 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