Bruton1
From Official Government Statistics; "It said approximately 335,000 additional deaths had occurred between 2012 and 2019 compared with what had been previously been predicted, and can be attributed to unnecessary austerity measures made by George Osborne, CotE between 2010 and 2015."
You are referring to an academic paper written by researchers at the Glasgow Centre for Population Health and the University of Glasgow - not official government statistics.
Also, the second half of your quote doesn't match the paragraph in your link, which reads;
It said approximately 335,000 additional deaths had occurred between 2012 and 2019 compared with what had been previously been predicted. It also said the change in these trends was greater for people living in the 20% most deprived areas in England, Scotland and Wales.
Austerity was driven by the EU - also from your links;
The European Commission, European Central Bank and International Monetary Fund (the so-called ‘troika’), along with leaders of many European nations, placed an explicit priority on the latter approach to deficit reduction. In theory, deficit reduction can be achieved by either raising taxes or reducing expenditure. When combined these activities are sometimes referred to as ‘fiscal consolidation’. In practice, the majority of deficit reduction policies (>80%) in Europe involved budget cuts rather than tax increases. 2 Consequently, for coherence we refer to these policies as ‘austerity’.