The BBC is left of center, but not when they cover the news. For news stories, they present the Five Ws (and one H) usually without comment, a la Edward R Murrow and Joe Friday. It's the "in depth" news stories they cover that are generally leftist. But even with those, they present both sides of the story ore often than not.
Just last night I was listening and they did a 20 minute piece where they kept using "Climate Change, "Global Warming" and "Global Climate Change" interchangeably. The story focused on the recent lack of water in a couple of streams near a couple of villages, and how people were adapting. Many of the people interviewed were quick to point out that it was impossible to know for sure if this was due to a normal cycle of climate change, or if this was something new and different, possibly caused by man. The villager's focus was more on how to adapt, expecially with more and more people needing water, than anything else. One village elder was quick to point out that yes, things are changing, but they have been changing for thousands of years for his people.
In yet another village, they talked of a time many generations ago where the fields around them were lush and green with many crops, and then it became a desert, but that recently there is more green and they can grow crops again. They called it part of the normal cycle of life on this planet.
The BBC went to great pains to present all sides of the story, which they generally do, even with their own "pet project" stories. They are far from perfect, but the BBC World Service stands head and shoulders above the likes of CNN and Fox News.