Academic. The EU has already done it and so we in the UK already have it. Our market just isn't big enough, relative to it's locality, to do something different. Whatever the EU does just washes over us. Only now we have no say in the what that is or how it is implemented.
It's interesting timing, two years after a UK government spokesperson said "we are not currently considering replicating" the EU charging requirement and a full year after the European Union officially mandated USB-C charging for a wide range of electronic devices.