Some things I thought were especially interesting. One learned the Wilberforce was considered less than a nationalist–antiwar, opposed to fighting the American colonies, willing to negotiate a peace with Napolean. This cost him. You also saw both his impatience and his patience in gradualism verses immediate perfection. The movie was good at showing his balancing act.
It also showed how weird America-style individualism is. We have our aristocracy but they are not the kind that own all land so that the rest are tenants. The origins of the welfare state make a lot more sense in thinking to the social change that modernity brought to a society with a “landed” class.