I'm not sure planning for a pandemic is a party political issue, as I think such planning has taken place periodically whichever government has been in power.
However we have had warnings in recent years with Ebola, MERS, "Swine flu" and Zika, to name a few, which should have concentrated the government's mind.
The last Exercise named "Cyrus" in 2016 apparently identified weaknesses and lack of readiness and equipment for such an pandemic, so it is untrue to say that this current outbreak couldn't have been foreseen.
Unfortunately it seems as if such planning is just a "paper exercise" and that Austerity and Brexit took precedence, therefore I do hold this government responsible for neglecting to plan realistically for the inevitable.
Government ministers been asked, but will not disclose details of Exercise Cyrus. There's such a lack of transparency unfortunately.