a "national asset" to me implies either a state or social ownership. In the UK we're not big into this when it comes to our own property, although Im sure a Marxist* like Ernie will be along in a minute to denounce the rentier life of the property-owning classes...
* casting nastursiams
With that ownership it would give the state a hand in the minutiae of use and utility of that property. We allow the state to interfere a bit already, planning aesthetics, planning use classes etc but we dont allow the state to enforce a change on the way we use our property. When you buy property, what it is, how it can be used etc is generally left alone, it very very rarely can be revoked or changed.
Only in extreme social benefit cases are things like CPOs (Compulsory Purchase Orders) authorised for example to facilitate a new bypass etc.
They shouldnt extend to pissing about with the sockets in every house having a rewire on the off chance someone will find it handy somepoint in the future.
BTW, one area where there is "state ownership" is the fact that the queen still owns your property, even when you have a "freehold". You hold the land in fee smiple from the queen at all times. That can never be excised. It coems into effect very very rarely, but its in those rare times that a "state" ownership can be countenanced: if you fail to make appropriate utility of the land, the "queen" can take it back off you and use it again. It's not something that's used in law much at all, but I think the idea is so that the state can recycle "abandoned" land or land for which no owner can be found and is just lying there doing nothing.