Brilliant. But two important points. First, as a documentary it is not 'presenter lead', that appalling disease which blights more or less every so-called documentary presently on broadcast television. Second, it highlights the abdication by the BBC, among the rest, of the long-form serious personal film, particularly of documentaries. With the single exception of the Storyville strand, the BBC and its moronic commissioners and schedulers don't even begin to understand that this was once the lifeblood of a great television company such as the BBC, which should be ashamed of itself but isn't of course, it being now arrogance personified. The only thing I missed and longed for in this remarkable film - let's not call it a 'documentary'; it's a film and deserves to be treated as such - was the slight of Lucy Worsley and her silly grin on the prow of the boat as it ploughed through the terrifying southern ocean, only to be swept into oblivion by the next mountainous wave. Ah well. You can't have everything, but what we have is a treasure, so thank you to everyone who laboured long and hard to get it made - with no help from the BBC !!!