In 1990, Humble appeared for the first time as an actress in a TV production, Spymaker: The Secret Life of Ian Fleming, and was credited as "Lauren Heston … The redhead". She was the assistant to a casting director who was looking for an actress to play a brief nude scene, and she got the job herself.[10][11] Humble started her television career as a researcher, later transferring to presenting programmes such as Top Gear, Tomorrow's World and the 2001 series The Holiday Programme – You call the shots where the team travelled the world[12] doing whatever viewers recommended using the then-novel media of text messaging and emailing the team as they travelled. At Springwatch Farm in 2006 Humble has specialised in presenting wildlife programmes, including Animal Park, Springwatch and Autumnwatch with Bill Oddie, Simon King, Chris Packham and Martin Hughes-Games and later, Wild in Africa and Seawatch. From 2000 to 2005, she presented a BBC series called Rough Science, in which a number of scientists were set various challenges to be solved using basic tools and supplies. Humble presented The Blue Planet Live! on the 2008 UK tour at Wembley Arena, St David's Hall in Cardiff and at Symphony Hall in Birmingham.[13] Her BBC television series, The Hottest Place On Earth, is a record of a month spent living with the Afar people in Ethiopia's hostile Danakil Depression.[14] She occasionally performs on the lecture circuit with a show based on her experiences with wildlife, titled Harassed by Hippos and Battered by Cod: A Humble Way to Make a Living.[15] On 16 February 2009, she made her first appearance in Countdown's Dictionary Corner.[16] She founded the web site Stuff Your Rucksack that helps organisations around the world find the items they need by matching them with travellers.[17] On 29 July 2009, Humble was the subject for the programme Who Do You Think You Are?[18] where she discovered that she had family connections to the Hartley Colliery disaster. Her paternal grandfather Bill Humble was a test pilot who tested the Hawker Tempest and her maternal grandfather Stan Carter was an officer in the RAF and after being shot down was held as a prisoner of war in Stalag Luft III at the time of "The Great Escape". In August 2009, Humble presented a series of programmes for the BBC in which she made a two thousand mile journey across the Middle East, following the ancient frankincense trade route of Arabia which first connected the Arab world with the West. The series culminates in her presenting frankincense, that she has carried throughout the journey, to be used in a Christmas service at the Church of the Nativity in Bethlehem.[19] On 3 October 2009, Humble was appointed president of the Royal Society for the Protection of Birds.[3] In 2013, Humble was succeeded as President of the RSPB by Miranda Krestovnikoff.[4] In 2010, Humble described being on holiday in the north-eastern region of Afghanistan where there were no signs of conflict, but where the Wakhi people were expected to be hostile. Instead, Humble said they were "amongst the most astonishing, hospitable, warm, genuine people" she has ever met. They were also hard and tough, and Humble believes that "if anyone thinks they are going to win a war against an Afghan they are insane!" She is writing about her experiences in Afghanistan for a forthcoming publication.[20] From 3 to 7 May 2010 she appeared as the dictionary corner guest on Countdown. In February 2011, Humble presented a three-part series of programmes, The Spice Trail, on the trail of six of the world's most valuable spices revealing their history, trade, mythology and usage.[21] In March 2012, she co-presented with Dr Helen Czerski a three part BBC series, Orbit.[22] In July, Humble co-presented Volcano Live with Professor Iain Stewart.[23] In 2017 Humble presented the BBC Two documentary series Extreme Wives with Kate Humble. In the first episode she visited the Kuria people in Kenya and explored issues of polygamy and female genital mutilation. In the second episode she spoke to members of the Haredi orthodox Jewish community in Jerusalem. The third episode meets the matrilineal community of Shillong in the Indian state of Meghalaya.[24] In 2018 she became president of the Wildfowl & Wetlands Trust.[25] Humble's book, Thinking on My Feet: The small joy of putting one foot in front of another, was shortlisted for the 2019 Wainwright Prize.[26] In November 2020 she was included in the BBC Radio 4 Woman's Hour Power list 2020.[27]