How is the UK a democracy when we don't elect the ultimate leader?
And the absence of an elected 2nd chamber with democratic legitimacy to scrutinise, amend and or block bills, Grendel pointed out the Parliament Act, that was a trap, so the unelected Lords can't block government bills, so the exec can pass a bill without their consent, there is no effective check on the PM's power in the UK - there needs to be separation of powers.
Grendel keeps sidetracking to Venezuela, whatever you think of them, they have a similar political system to the USA and France, the bastions of 'democracy', yet Venezuela actually has the most proportional electoral system than both - admittedly, I'm a fan of both the 2nd ballot and the party list voting systems.