Worst UK Prime Minister In My Lifetime

During one of our lunchtimes chats, we got around to who is the worst UK Prime Minister in our lifetime and seeing as i was born in 1969, this gives me 15 to choose from.
I can leave out the first first few up to 1979 (Harold Wilson, Edward Heath, Harold Wilson again and James Callaghan) as I only really began noticing who was in Number 10 during the Margaret Thatcher years so of the 11 left, and 7 of those have come in the last 10 years, my worst top three in my lifetime are these.
At three i would put Boris Johnson (2019-2022), what he did during Coivid where he lied and cheated and told us to stay at home and not meet anyone while hosting wild drunken parties in Downing Street is bad enough, to but then lie and swear blind it never happened until the photographic evidence came to light pretty and then STILL tried to deny it, pretty much not only destroyed the Conservative Party (which is no bad thing), but saw him booted out of his job by his own Party who refused to work with him any longer.
Second would go Margaret Thatcher (1979 - 1990), she privatised anything that wasn't nailed down whilst spreading the myth that privatisation would provide a more efficient and cheaper way to provide services and set about selling off nationalised utilities such as gas, water, and electricity and allowed the private companies to snap up British Rail, British Telecom, British Aerospace, British Airways, British Steel as well as the coal mines, ports and British Petroleum.
In practise, however, it increased bills, lowered the quality of services and led to rising unemployment and the disastrous consequences of her policies resonate still today as a look at your rising utility bills will show while the bosses of the Privatised companies rack up millions in bonuses.
She was removed by her own Party finally after she introduced a Poll Tax which led to riots but as Privatising the NHS was next on her to-do list,  not before time.
My number One and worst Prime Minister in my lifetime would be Tony Blair (1997-2007) of who i was a great fan of when he swept into power amid much cheer and with the introduction of the tax credits system, raising funding for public services, signing the Northern Ireland peace deal and giving us the minimum wage, it was a moment when us lefties thought brilliant, we finally have a proper Socialist who will make Britain a better and fairer place and from 1997 to 2002 i was one of his staunchest defenders, then Iraq and Afghanistan happened and his name name changed from Blair to Bliar.
He lied to take us to war with some of his justifications unraveling almost immediately such as Saddam developing nuclear, chemical and biological weapons and having links with Al-Queada in his dodgy dossier of so called 'intelligence' before dropping any pretense and just throwing his lot in with the then American President, George W Bush, to order out the Weapons Inspectors who kept coming back from sites empty handed and despite 2 million Brits marching against the action one Saturday morning, invaded Iraq to take out Saddam anyway.
As i said at the time, Saddam said he never had any WMD's Blair and Bush said he did but as it turned out, only one of these were telling truth.
Over almost the next decade an estimated 1 million Iraqis died and terrorists piled into that country and as warned by the Governments own intelligence, terror attacks increased tenfold around the globe including in the UK so anybody who is responsible for lying to oversee the wholesale slaughter of innocent civilians in their own country for no good reason, is deservedly my number 1.