It’s the voice that’s spawned a thousand imitators: wise but warm, avuncular and slightly husky, breathless with enthusiasm. The voice of a born storyteller, a plummy baritone infused with dry humour and a limitless capacity for wonder. For every vole scurrying through the undergrowth, there’s a David Attenborough impersonator doing a dramatic YouTube voiceover.

At 91, Sir David Attenborough has enjoyed a remarkable journey in broadcasting from locations across the globe.

Giant cuttlefish mating aggregation, Whyalla, South Australia.

Surfing bottlenose dolphins, South Africa.