Another Vote - The Rise and Rise of Michael Rimmer.

The mysterious Michael Rimmer (Peter Cook) appears at a small and ailing British advertising agency, where the employees assume he is working on a time and motion study. However, he quickly begins to assert a de facto authority over the firm’s mostly ineffectual staff and soon acquires control of the business from the incompetent boss Ferret (Arthur Lowe). Rimmer then succeeds in establishing the newly invigorated firm as the country’s leading polling agency, and begins to make regular TV appearances as a polling expert. He subsequently moves into politics, acting as an adviser to the leader of the Tory opposition, and then becomes an MP himself, for the constituency of Budleigh Moor (a reference to Cook's frequent collaborator, Dudley Moore), along the way acquiring a trophy wife (Vanessa Howard). Relying on a combination of charisma and deception—and murder—he then rapidly works his way up the political ladder to become prime minister (after throwing his predecessor off an oil rig). Rimmer then gains ultimate control by requiring the populace to engage in endless postal voting on trivial matters. At last, exhausted, they acquiesce in one final vote which passes dictatorial power to him. Ferret attempts to assassinate Rimmer as he and his wife ride through the capital in an open-topped convertible, but fails and falls to his death.

there's a scene in the middle when an old guy, in a tank top,  is sitting down after work, looking at stacks of choices to go through and sort out regarding every matter of ruling the land.  Peter Cook reminds you of Tony Blair.