If a HMO (House of multiple occupancy) receives a fine for not having a TV licence, how is it decided WHO pays the fine?

Each tenant has his own tenancy agreement.

The (ONE large TV) is in the living room (communal area) so I don't see why each tenant requires their own licence

....and what happens if none of the tenants pays the fine ?

The tenants may or may not watch TV on their devices in their rooms but as that can't be proven it's irrelevant to this question.

As it can't be determined exactly WHO in the house has been watching TV (without a licence) on the communal TV then how can one specific name be put on the summons ???

It would be unfair to fine everyone ??

There is ONE large TV in a communal area (the living room).

Wether they watch any TV on their laptops....I have no idea. As that is unknown (and not really provable) I have assumed for the sake of argument that they do not.

So the question remains.... If someone in the house watches TV on the living room TV (and there is no licence for it and no one in the house has paid for a TV licence) who will be responsible for paying any fine ??