What about the multiple outsourcing failures in Local Government?
Here in Somerset, a Big Bang outsource of Back Office services to IBM in a joint venture with IBM called Southwest One went horribly wrong.
Instead of saving Somerset County Council £182m over 10 years it cost £59m+ more than savings after 9 years.
Similar failures have occurred in every largesacle back office outsource I can think of: Suffolk, Birmingham, Liverpool, Cornwall etc
https://www.theguardian.com/government-computing-network/2012/feb/16/southwest-one-ibm-loan-council
https://ukcampaign4change.com/2017/02/09/southwest-one-a-positive-postscript/
https://www.bbc.co.uk/news/uk-england-somerset-35039696