This third canal journey takes Pru and Tim back to their honeymoon destination, Llangollen, in North Wales

Timothy and Pru explore London's Union and Regent's canals, from Brentford to Limehouse, meeting with friends Andrew Sachs and Sir Ian McKellen

Tim and Pru travel along the 21-mile Kennet and Avon canal, from Bath to Devizes, meeting canal-side characters and wildlife along the way

Tim and Pru travel past enchanted forests, fairy-tale castles and picturesque mountains and valleys, on a trip Alsace and Lorraine in France

Tim and Pru voyage through the dramatic landscape of north-west Portugal, with deep locks, hilltop vineyards and some port in Porto

The intrepid 'ancient mariners' go on one last far-flung voyage, to South East Asia, travelling the waterways of Vietnam, from Halong Bay to Ninh Binh, Hoa Lu and Hanoi

For the last stage of Tim and Pru's canal odyssey, they head to France's Burgundy region to visit the Canal du Nivernais, which runs through some of the most picturesque scenery in northern France

Tim and Pru visit the famously beautiful Welsh canal with a haunted castle on route

Prunella and Tim travel the Rochdale canal, past once mighty mills, the epic beauty of the Pennines and the longest and highest canal tunnel in Britain

Timothy West and Prunella Scales travel from Birmingham to Braunston, Northamptonshire, for a festival of canal boats and to unveil a plaque to a late friend and canal campaigner

Timothy West and Prunella Scales head to Ireland and the Shannon Erne Waterway, where they try some folk singing, Irish dancing, and visit the ruins of Crom Castle

Tim and Pru navigate the Lancaster Canal, an early masterpiece of the waterways - travelling up along the coast of Morecambe Bay and visiting Carnforth and Lune Aqueduct

Tim and Pru embark on an epic journey along Canada's Rideau Canal, a world heritage site - from the backwoods of Ontario to the nation's capital

Timothy and Pru explore the most picturesque stretch of the Canal du Midi in the south of France, eating lamb's brain fritters and drinking 200-year-old brandy

Tim and Pru travel to Venice, following the route once taken by Casanova and Byron, escaping the crowds of St Mark's to find tranquillity as well as beauty

Tim and Pru island-hop their way through the Hebrides, visiting Tobermory, Iona, the Isle of Jura, and lastly the magical nine-mile Crinan canal

Tim and Pru explore one of Britain's most ancient and picturesque waterways, discovering the area's unique way of life, its ruins, fens, marshes and woodlands

Tim and Pru embark on a voyage through canal history, as they explore the waterways of north west England - heading from the suburbs of Manchester to the great canal port at Ellesmere

Tim and Pru set forth from Gothenburg on the first half of the Göta Canal, one of the longest and most beautiful waterways in the world, travelling 350 miles, coast to coast across Sweden

Tim and Pru follow the ancient route of the Vikings, visiting Stockholm and the nearby islands of its archipelago

Tim and Pru take a boat ride in the Argentine jungle. There's gin and tonic with some remote Anglo Argentines, hummingbirds, honey, and a spot of tango.

Timothy and Pru complete their grand tour of South East Asian waterways on Vietnam's Mekong Delta and the world-famous Cambodian temple of Angkor Wat

Timothy and Prunella take a trip down the Stratford-upon-Avon Canal, one of Britain's most picturesque waterways, and also pay tribute to William Shakespeare

Tim and Pru travel to the Netherlands, exploring the canals from the Windmills of the Kinderdijk to the vibrant city of Amsterdam

Tim and Pru take another journey into their pasts, via the Leeds and Liverpool Canal, which celebrates its 200th anniversary in 2016