Shetland is becoming increasingly well known for its killer whale population – learn more about them as travel writer James Fair heads to Shetland mainland to talk to Hugh Harrop of <a href="https://www.shetlandwildlife.co.uk/">Shetland Wildlife</a> They also chat about the realities of life in winter so far north and other wildlife treasures of these magical isles. We are also pleased to announce that the BBC Countryfile Magazine podcast has been shortlisted for a <a href="https://publisherpodcastawards.com/shortlist/">Publisher Podcast Awards 2020</a>. Image from Getty Images Hosted on Acast. See <a href="https://acast.com/privacy">acast.com/privacy</a> for more information. Learn more about your ad choices. Visit <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a>

43. Search for the true source of the River Thames – a mystery adventure part 1

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