The Government has announced that from Thursday Sept 24, venues including hospitality, leisure & tourism and close contact services, will be legally required to display an official NHS QR code poster. The new NHS COVID19 app will launch the same day. 
You can create and download a poster for your business here: https://www.gov.uk/create-coronavirus-qr-poster
More info is on our website here, including details of how we can help if your business needs assistance with printing: https://www.cravendc.gov.uk/coronavirus-advice-and-information/nhs-covid-19-app-information-for-businesses/