People can be very successful at carrying out evil plans, which may explain why Thatcher comes second on the list, because I certainly wouldn't call her a *good* Prime Minister. I do agree about Attlee being the best. As for poor old Douglas Home, it's true that he never got a chance to do very much except lose an election, but that also means he didn't do much that was actively evil.

Cameron was certainly a tragic failure; and what is much more tragic is that he has brought his country down with him.

On the same basis, Blair ranks highly in this survey.

Despite some of the undeniable social policy gains during his tenure (and if anyone argues on that basis, we also have to give credit to Cameron for instituting same-sex marriage, for instance), it's arguable that the mess we're in now (the country and the Labour Party, as well as a large swathe of the rest of the world) is in no small part his legacy, following on from Thatcher (via Major, who was basically a caretaker) and setting the stage for Cameron.

The most useless Prime Minister in forty years (since the hapless Billy McMahon).

"Waffles" Turnbull has achieved nothing in his first year in office except to give tax breaks to the richest Australians. (That includes politicians, which is why it was supported by the RW-Labor government).

A pox on all of them.

...but David Cameron is easily the worst Prime Minister of my lifetime, and Theresa May is on course to be far far worse. She could even be as bad as Lord North at the present rate!