BBC's Watership Down

I wonder if any of you watched this new adaptation of Richard Adams Watership Down. I have not read the book so difficult to judge against the book or previous film. Seemed to have a stella cast although I was convinced the seagull was Billy Connolly rather than Peter Capaldi!!! It seemed very long and perhaps would have been better over four nights rather than two. Found the production quite difficult to follow at times because the lighting was so subdued, obviously for effect. I have mixed feelings about it, not sure its a recommendation to rush out and watch on catchup. 

David