Grannygravy13 Much science fiction becomes reality in due course. Picture phones, full body scanners, moon landing, tasers, self-driving cars, robots/replicants, reality TV, Big Brother (constant surveillance), smart homes, antibiotic resistance, illegal organ harvesting, etc, etc, etc, are all themes that can be found in various books and films - some from years before scientists and engineers had even considered them.
Several of the disturbing scenarios portrayed in Years and Years could be seen as an extension of trends that are occurring now - extreme weather causing massive population displacements, draconian measures introduced to deal with refugees, complete dependence on digital communications leading to cyber terrorism, ultra-nationalist political leaders coming to the fore, implantation of chips into the body to replace external gadgets (such as mobile phones), areas of deprivation designated as controlled criminal areas requiring passes to enter and leave, re-criminalisation of certain activities - eg homosexuality, etc, etc.
Of course these trends do not inevitably lead to the sort of dystopia portrayed but there appears to be little recognition of and discussion about the potential dangers.