It’s a great series, with great acting.
But Edward VII agreed to the “reform” of the Parliament which effectively stripped the Lords of much of their ability to veto legislation; and also fostered
“gentlemen’s agreements” which forced Britain to enter WWI (there was no vote in Commons on the war, the Commons were simply informed they were at war).
Under the British constitution (unwritten) the power to declare war lies with the sovereign, which is exercised only on the “advice” of his/her ministers. Once the cabinet voted for war, it was a done deal.
Wasn’t his first royal edict “Gentlemen...you may smoke!”?