Landlord Insurance

Other

As landlord of a rented house, I insure the building and the contents. The contents insurance for £20K is intended to cover my own contents and not necessarily the tenants contents - in fact I have no knowledge of the nature or value of the tenants contents.
I notice that there is nothing in the RLA AST agreement to require or even recommend that the tenant insures their own possessions. Is there a reason for this apparent omission?
In the event of an accident attributable to the landlord eg a fire caused by an electrical fault or a flood caused by a burst watermain, would the tenant be in a position to claim from the landlord the value of any of their possessions destroyed by the fire or flood?