"The new rules allow one bedroom for.
Every adult couple (maried or unmarked)
Any other adult aged 16 or over
And two children of the same sex under 16
Any two children aged under 10
Any other child (other than a foster child or child whose main home is elsewhere)
A carer (or team of carers) who do not live with you but provide you or your partner with overnight care"

That's from the notification sent to people who are targeted by this. If Don or anyone else can find any room for visiting relatives in there they are very clever indeed...