Where it comes from
The line in the source
London | October 18, 2019 | November 15, 2019
Explore / Figure
Record
Overseas pop-up: London 2019, 18 October 2019 to 15 November 2019
18 October 2019 18 October 2019 to 15 November 2019
EstimateOur model or estimate. Treat it as an order of magnitude.
Found in one pass only. The research team reads every source twice, independently; this record turned up in one reading but not the other, so treat it as less certain than its grade.