Landscapes & nature
River Severn
River in the United Kingdom
Wikipedia names River Severn as where 3 films and series were filmed; each title’s page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in River Severn. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
Lydney
England · 5 km north
Town in Gloucestershire, UK
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Towns & cities
Berkeley
England · 6 km east
Town and civil parish in Gloucestershire, England
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Towns & cities
Sharpness
England · 6 km north-east
Village in Gloucestershire, England, UK
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Castles & palaces
Berkeley Castle
England · 6 km east
Castle in the town of Berkeley, Gloucestershire, England, UK
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Landscapes & nature
Gloucester and Sharpness Canal
United Kingdom · 7 km north-east
Canal in the United Kingdom
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Landscapes & nature
Wye Valley
United Kingdom · 8 km west
National Landscape and Site of Special Scientific Interest in Wales and England