This week's edition is guest-focused. Paul Berriff OBE, has lived a life few could imagine. A filmmaker and photographer whose work spans more than 180 prime-time documentaries, he has survived a helicopter crash, escaped a sinking ship in a North Sea storm, crawled from the wreckage of a downed aircraft, and lived through the collapse of both towers on September 11 while filming inside the disaster zone. His tape from that day remains one of the most important visual records of the south tower falling.

Before film came photography. In the 1960s, Paul made remarkably natural portraits of The Beatles and the Rolling Stones, long before fame turned them into myth. Later, with what he called a "clockwork camera," he moved into observational documentary and eventually built his own production company. Alongside all this, he trained as a firefighter and helped carry out more than 850 RNLI sea rescues.

The conversation moved differently from how I imagined it might. Two major stories emerged. One is his account of filming inside the World Trade Center as the towers came down, surviving when the buildings collapsed around him. The other is the story of a rescue by helicopter in brutal conditions, a moment when a second narrow escape became part of his history.

I'll also share a little more about the craft of photogravure that we'll be exploring on the new Scottish retreat in June. There's a reminder of this month's assignment, the last one of the year, before we shift our focus to THE ONE in December.

Links to all guests and features will be on the show page, my sincere thanks to our Extra Milers, without whom we wouldn't be walking each week and Arthelper.ai, giving photographers smart tools to plan, promote, and manage your creative projects more easily.

WHY: A Sketchbook of Life is available here.