Churchill was a lousy peacetime PM, but without him as the wartime leader I suspect the outcome might not have been good.
It goes a lot deeper than that.
Yes, a superb otaror in WWI, but as a cabinet minister in WWi and home secretary in the postwar period, not to mention being replaced in his Dundee constituency by the one and only temperance candidate ever to sit in the Commons, he had a 'unique' record.
That still makes him worthy of a statue, though.
As far as the Iron Lady?
Well, we can decorate her with a traffic cone, as per Wellington in Glasgow's George square.
It will add a bit of colour......