Britain is also blessed with a functioning political culture. It is dominated by people who live in London and who have often known each other since prep school. This makes it gossipy and often incestuous.
But the plusses outweigh the minuses. The big newspapers still set the agenda, not cable TV or talk radio. If the quintessential American pol is standing in his sandbox screaming affirmations to members of his own tribe, the quintessential British pol is standing across a table arguing face to face with his opponents.
British leaders and pundits know their counterparts better. They are less likely to get away with distortions and factual howlers. They are less likely to believe the other party is homogenously evil. They are more likely to learn from a wide range of people. When they do hate, their hatreds are more likely to be personal and less likely to take on the tenor of a holy war.
The British political system gives the majority party much greater power than any party could hope to have in the U.S., but cultural norms make the political debate less moralistic and less absolutist.