You will need:
Parliament. House of Lords (Year of publication) Title of bill. (Bills number). Available from: www.webaddress.com [Accessed day month year].
Parliament. House of Lords (2020) Age of Criminal Responsibility Bill. (HL Bill 90). Available from: https://services.parliament.uk/bills/2013-14/foodlabellingsugarcontent.html [Accessed 28 January 2021].
In-text citation: (Parliament. House of Lords, 2020)