Yes, along with being a successful actor and director, he was also a very wealthy socialist. Apparently he received much criticism for it, too.
He was the third son of a poor Welsh coal-miner who grew up in the 1930s, when real material poverty still existed in Britain. I can understand why people who have experienced such poverty are emotionally drawn to socialism, but modern-day western socialists who have known nothing but wealth and privilege have no such excuse.