Till now the scenario you outlined above of a family has been limited in discussion to high general needs rents in the capital. Leaving £180 only in HB payments to cover rent.
However, the same circumstances apply across the country to supported housing accommodation based services on a national basis.
Think of Dv refuges as one example where gross rents are often much higher than £180. This policy will see very vulnerable women and children at risk of eviction due to HB shortfalls.
Another example is a homeless families unit. What about those families displaced by fire (timber-framed buildings anyone); flood (remember Hull and Sheffield?)
There is also a range of accommodation based supported living environments for those with learning difficulties, mental health etc.
The same simplistic analogy for a family can also apply to single people too and nationally and not just in the extreme general needs rents in the capital.
The alternatives for the supported living model of care is registered care which costs far more than £500 pw too.
However, the DV and homeless families units nationally is the best example of why this policy is so superficial and has massive unintended (?) consequences.