They put out a RFP and because they are a large org they assume only another large org can actually do it, which narrows the list down to 3-4 companies even though they've all previously proven many many times they can't be trusted one of them gets the contract.
Decade later and hundreds of millions of pounds of fuckups later it sorta works or it ends in questions in parliament.
Then a different gov branch needs a system, puts out an RFP..and on it goes.
They put out a RFP and because they are a large org they assume only another large org can actually do it, which narrows the list down to 3-4 companies even though they've all previously proven many many times they can't be trusted one of them gets the contract.
Decade later and hundreds of millions of pounds of fuckups later it sorta works or it ends in questions in parliament.
Then a different gov branch needs a system, puts out an RFP..and on it goes.
Honestly amazes me anything works.