A Great Welsh Adventure with Gryff Rhys Jones – 2014 – Griff takes us on a beautiful journey through his native Wales.
Alistaire Cooke's America – 1972 – Anglo-American journalist Alistaire Cooke covers the history of the US up until the early 1970s.
Ancient Invisible Cities – 2018 – Michael Scott teams up with subject-matter experts in different locales to reveal hidden secrets beneath the world's oldest cities.
Around the World in 80 Gardens – 2008 – Monty Don visits some of the most unique gardens in the world
Back in Time for Tea – 2018 – This series looks at how Northern English cuisine has changed over the past 100 years.
Barging Round Britain with John Sergeant – 2015 to 2016 – Former journalist John Sergeant takes viewers all over Britain, from the Hebrides Islands of Scotland to the county of Somerset.
Baroque! From St. Peter's to St. Paul's – 2009 – This three-part BBC Four documentary focuses on art and architecture from the Baroque period.
Best Walks with a View – 2016 to present – Walking enthusiast Julia Bradbury takes viewers on some her favorite highly-accessible treks around Britain.
Bill Bryson Notes from a Small Island – 1999 – Bill Bryson takes viewers on a trip around Great Britain.
Birding with Bill Oddie – 1997 to 2000 – This loosely-scripted documentary follows writer and conservationist Bill Oddie as he observes birds in their natural habitat.
Bloody Britain – 2004 – Comedian Rory McGrath looks into the gruesome past of Britain.
Britain's Great Cathedrals with Tony Robinson – 2018 – Tony Robinson visits some of Britain's most awe-inspiring cathedrals, focusing on their history and how they've shaped their communities.
Britain's Lost Routes – 2012 – Griff Rhys Jones looks at ancient routes associated with the movement of different people or products in Britain.
Britain's Most Historic Towns – 2018 to present – Professor Alice Roberts gives viewers history lessons as she travels around Britain.
British Gardens in Time – 2014 – Paul Copley (Downton Abbey) narrates this series that visits four exquisite gardens in the UK.
Cathedral Cities – 2012 – This six-part series explores what makes English cathedral cities so special, and includes visits to cities like Portsmouth, Rochester, Salisbury, and more.
Charlie Luxton's Homes by the Sea – 2014 to 2015 – Architect Charlie Luxton travels around Britain checking out unique homes along the coastline.
Churches: How to Read Them – 2010 – Dr. Richard Taylor examines the imagery, symbols, and architecture of Britain's churches.
Churchill's Bodyguard – 2005 – This 13-part series is based on the memoir of Walter Thompson, Churchill's long-time personal bodyguard.
Civilisation – 1969 to 1970 – This ambitious documentary series by Kenneth Clarke looks at the history and cultural heritage of the western world.
Civilisations – 2018 – With nearly 50 years passing since Kenneth Clarke's original Civilisation series came out, Simon Schama, Mary Beard, and David Olusoga revisit the history of civilisation.
Coast – 2005 to 2016 – Each episode of this series takes a look at a bit of the coast in or near the British Isles.
Coastal Railways with Julie Walters – 2017 – Julie Waters travels Britain's most scenic coastal railways, stopping off to visit the people and villages along the way.
Countryfile – 1988 to present – This long-running weekly series celebrates rural life in the UK. While it doesn't truly have seasons, it's been running for 30 years.
Country House Rescue – 2009 to 2012 – Businesswoman Ruth Watson helps struggling, crumbling country houses turn their fortunes around.