Interesting... I'm no lawyer, but perhaps it's possible?
Under English fire safety law, the Responsible Person's duties tend to be constrained by the extent they have 'control' over the premises (Article 3 of the RR(FS)O). If, via contract, the freeholder / managing agent give the tenants a significant degree of 'control' over fire safety via lease agreements or other forms of contract, in my mind they might become RPs, even if the Order does not apply within their dwellings? I guess that the degree of control would need to be backed up by the authority to take action (to spend money on the building and to make alterations, where necessary)?
As I say, one for the lawyers - doesn't sound fair to me, but that doesn't mean it's not legal!