RELUCTANT national treasure, and the UK’s premiere natural historian, Sir David Attenborough boasts a career like no other. His powerful vocal presence, across a career spanning over half a century, has brought comfort to the millions. What’s more, at the ripe old age of 94, this screen veteran has no thoughts on quitting.

On Monday, September 28, Attenborough takes his first-hand account of humanity’s impact on nature to the big screen. Prepare for a mission statement, a last dash beacon of hope, a wish for a better future even.

David Attenborough: A Life on Our Planet may well be the broadcaster’s most personal documentary to date. Produced by the World Wide Fund for Nature and Silverback Films, the film stands witness to Attenborough reflecting upon his career and ‘the devastating changes he has seen’. Battery farming, deforestation, melting ice caps. It’s a sobering watch.

As was Attenborough’s most recent television offering - Extinction: The Facts - which can currently be seen on BBC iPlayer. And yet, A Life on Our Planet is no simple lecture for humanity on our failings. It is a parable and epoch of opportunity. In Attenborough’s own words: ‘We need to learn how to work with nature rather than against it – and I’m going to tell you how.’

Those not yet ready - or able - to return to the cinema, will be able to catch A Life on Our Planet later this year on Netflix. That said, Monday’s big screen premiere will offer attendees the chance to catch also an exclusive Q&A between Attenborough and, fellow knight and national treasure, Sir Michael Palin. Not to be missed.

Also out this week, albeit on far fewer screens, 23 Walks unites Alison Steadman with I, Daniel Blake breakout Dave Johns.

The pair play London pensioners Fern and Dave, two strangers who meet and bond whilst walking their dogs. Romance blossoms but secrets fester. 23 walks can make or break a couple. In this case, they might well do both.

The film is directed by Brit and one time Oscar nominee Paul Morrison. Those expecting the whimsy that normally dominates films concerning the lives of the over 60 - see Finding Your Feet or the Best Exotic duo for prime example - won’t find it here. 23 Walks hits hard, misses often but benefits from one or two sterling central performances.