On Fri, 14 Jul 2017 15:33:51 +0100, Roland Perry wrote:

Are you saying that Grenfell's landlord wasn't reasonably sane to allow
ten year old untested butane filled fridge/freezers when that class of
appliance is a known risk?

The landlord's insurance co. could pick this kind of thing up.
Tenant questionnaire plus sample inspection could verify risks.