The excellent article by Cornerstone barrister Tara O'Leary below is a really helpful summary of the new Domestic Abuse Act 2021 housing-related provisions which came into force on 6 July 2021. 

A statutory definition for the first time of domestic abuse; a wide definition of "relatives", an additional offence of strangulation or suffocation added to the list of serious offences which can support the mandatory anti-social behaviour ground for possession and rewritten homelessness guidance. 

The duty on local housing authorities to grant secure lifetime tenancies to victims is not yet in force. No date yet known. There is a factsheet from May 2021 which explains the duty in outline

Do note that duty is not extended to housing associations, only to local housing authorities.

This long-awaited legislation should start helping to improve support to victims of domestic abuse as more of its provisions come into force.