Sir David Attenborough's latest nature series has received five-star reviews from critics, one of whom says it may be the BBC's "best wildlife show ever".

Seven Worlds, One Planet, the Mail's Christopher Stevens says, is "visually magnificent" and has photography that is "almost abstract in its beauty".

The show, says the Telegraph's Michael Hogan, is "another landmark series" from "the indefatigable Sir David".

The Guardian's critic concurs, calling it "gorgeous, breathtaking and moving".

The debut episode drew an average overnight audience of 6.78 million* - almost twice the audience of the Strictly Come Dancing results show that followed it.