Little period details: - strobing CRT monitors that don't line up with the frequency of the TV camera - PCs in the internet cafe, Macs in media, Acorn Archimedes (with ARM processor!) in schools - first thing to do with the global communications network is send a dumb message to the US President - indexed-color images; you can see in one case when she changes windows and the colours go wrong in the background as the…
I studied Broadcast Engineering for my degree back in 1997, and you could definitely shift the input signal to match the refresh rate of a CRT screen or a flourescent tube light on the Sony BetaCam TV studio cameras I worked with. I reckon the BBC would have been working with similar or better tech in 1995. I wonder if this might have been a directorial choice to show what viewers expect rather than any technical issue.