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Iolo Williams

Iolo Williams

Acting

Biography

Iolo Williams is a Welsh naturalist, conservationist and campaigner. Born in Builth Wells, Breconshire, in the heart of rural Wales, his family moved to Pembrokeshire in the west of the country, before moving to Montgomeryshire, when he was aged five, to live in Llanwddyn. Iolo went on to study London, England for a degree in ecology at North East London Polytechnic. After graduating he went on to work for the RSPB for almost 15 years as Species Officer for Wales, a job he loved as he worked with some of the country’s rarest breeding birds. Eventually this brought him to the attention of the media and BBC 2’s "Visions of Snowdonia" and "Birdman" followed Iolo’s work as an RSPB officer. In the late 1990s Iolo left the Society to work full-time in the media. His series, in both Welsh and English, concentrated on the wildlife of Wales and the world and he co-presented several network series such as Nature’s Top 40 and Countryfile. In 2019 Iolo became a regular presenter on BBC Television's flagship nature programmes "Winterwatch", "Springwatch" and "Autumnwatch". Iolo has written several books on Welsh wildlife in both English and Welsh and he is a regular contributor to several magazines, including "BBC Wildlife’" Iolo is a keen sportsman, having played rugby for most of his life, and also a qualified paraglider, PADI Divemaster.

Known For

Springwatch
9.3

Springwatch is an annual BBC television series which charts the fortunes of British wildlife during the changing of the seasons in the United Kingdom.

Springwatch

2005
Winterwatch
9.6

Live coverage as our wildlife faces up to the most challenging time of year.

Winterwatch

2013
Autumnwatch
9.5

A spontaneous, sometimes humorous look at UK’s wildlife in autumn through conversations with experts and passionate amateurs.

Autumnwatch

2007
Iolo's River Valleys
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Iolo Williams explores four of Wales’s most stunning river valleys from sea to source, uncovering their hidden wonders and remarkable wildlife.

Iolo's River Valleys

2025
Iolo's Secret Life of Birds
7.2

Iolo Williams explores the behaviour of birds in Wales, revealing all aspects of their lives from surviving harsh winters and avoiding predators, to living alongside us in our towns and cities.

Iolo's Secret Life of Birds

2010
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Iolo Williams delves into the archives to see the fantastic wildlife that he's filmed in Wales during the past 25 years.

Iolo: A Wild Life

2024
Wonders of the Great Barrier Reef with Iolo Williams
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On the other side of the world under the crystal clear blue waters of the Pacific Ocean lies one of the most enchanting places on the planet. Over ten thousand miles away on the north eastern coast of Australia lies the Great Barrier Reef, one of the natural wonders of our world. It provides shelter to some hidden wildlife sanctuaries that contain some magical marine creatures. Invited on a reef adventure by Emmy Award-winning underwater cinematographer and marine biologist Richard Fitzpatrick, conservationist and naturalist Iolo Williams dives deep beneath the surface of the coral sea to discover what state this natural wonder is in. Together they travel from the extreme swells of the northern part of the reef right down to the cooler pristine corals of the south. They discover how healthy the Great Barrier Reef really is in some of its key locations to see and find out if there are real signs of hope the reef can survive the threat of global warming.

Wonders of the Great Barrier Reef with Iolo Williams

2018
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From the industrial past to a remarkable rewilding. Iolo Williams explores the history, heritage and habitats of an abundance of wildlife in the south Wales valleys.

Iolo's Valleys

Iolo's Anglesey
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Iolo Williams explores Anglesey by land and by sea to look for the rich diversity of wildlife on Wales’s biggest island. He also discovers why it has some terrific rare species.

Iolo's Anglesey

2022
Iolo: The Last Wilderness Of Wales
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Iolo Williams tracks wildlife in one of Wales' extraordinary landscapes - the Cambrian Mountains.

Iolo: The Last Wilderness Of Wales

2020
Iolo's Borderlands
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Iolo Williams explores Monmouthshire. He looks for a rare bee on the Gwent Levels and finds fallow deer in the Wye Valley, as well as a heavily-camouflaged bird near Abergavenny.

Iolo's Borderlands

2023
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Iolo's Great Welsh Parks

2013
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Iolo Williams explores the rugged landscapes of Wales, visiting places that have been enjoyed and exploited for centuries and where wildlife thrives.

Rugged Wales

2012
Wild Wales
10.0

Iolo Williams shares his passion for Welsh wildlife. Filmed over a year, the series features stunning aerial and wildlife photography.

Wild Wales

2010
Black Waters: The Sea Empress Disaster
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The story of the 1996 Sea Empress oil spill off the Pembrokeshire coast, and how communities mobilised to respond to the disaster and protect their coastline.

Black Waters: The Sea Empress Disaster

2026