
https://www.huffingtonpost.co.uk/entry/test-and-trace-spending-ps37bn-budget-small-print_uk_60412920c5b601179ec35d4a

https://www.nao.org.uk/wp-content/uploads/2018/01/PFI-and-PF2.pdf

https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/avis_du_comite_fiscalite_capital-01-10-2019.pdf