Today the Ministry of Housing, Communities and Local Government issued an update of the “How to Rent Guide”.
Originally published in June 2014 the last version was just over a year ago in August 2019. This update comes with the warning that failure to give and prove that a tenant has received it, will invalidate any eviction process served via Section 21 (6a). The suggestion is to email the pdf version to the tenant which will serve as proof but to also reference the link to the governments website so they can access the most up to date version.
https://www.gov.uk/government/publications/how-to-rent