evidence: Mandatory use of face coverings differed by nation. England: 15 June 2020 – public transport; 24 July 2020 – shops; 24 September 2020 – restaurant workers and in restaurants. Scotland: 22 June 2020 – public transport; 10 July 2020 – shops; 14 August 2020 – indoor public spaces including restaurants. Wales: 27 July 2020 – public transport; 14 September 2020 – indoor public spaces including shops and restaurants. Northern Ireland: 10 July 2020 – public transport; 10 August 2020 – shops; 14 October 2020 – restaurants. [...] Department of Health and Social Care, Matt Hancock. Face coverings to be mandatory in shops and supermarkets from 24 July 2020. Available from: https://www.gov.uk/government/speeches/face-coverings-to-be-mandatory-in-shops-and-supermarkets-from-24-july#:~:text=statement%20to%20Parliament-,Face%20coverings%20to%20be%20mandatory%20in%20shops%20and%20supermarkets%20from,supermarkets%20from%2024%20July202020.