‘an intimate, extraordinary and often tender memoir’. The Scotsman said it was ‘astonishingly honest . . . one man's set of raw, moving and resonant truths’ . The Independent described it as ‘an extraordinary story’. His second book, the Sunday Times Bestseller, ‘One of the Family - Why A Dog Called Maxwell Changed My Life’, came out in 2021. In this he addressed his complex relationship with his birth mother and the guilt he carried towards his adoptive parents for needing to trace her. He described his emotional breakdown and late diagnosis of bipolar disorder and how his beloved Labrador Maxwell's unconditional love had helped him. In the Times Andrew Billen described it as A remarkable autobiography’. The Daily Express said it had ‘Commendable honesty . . . a poignant book about the search for belonging’ and the broadcaster and journalist James O’Brien said that the book has ‘a lesson for all of us and delivers a resounding message of hope and of love’ Campaigning for animals A lifelong dog lover, Campbell is a vocal advocate for animals, writing and campaigning for rights, welfare and conservation. After awakening to the desperate plight of the African elephant he began campaigning with Will Travers of the Born Free Foundation and the writer and campaigner Dominic Dyer to raise awareness of the issue and campaign to ban the ivory trade. He has written extensively on the subject. He regularly attends and Global March for Elephants and Rhinos, held in cities across the world and frequently speaks at the event. He has also campaigned for and supported the Sheldrick Wildlife Trust, is a patron of the Born Free Foundation and supports a number of animal and conservation charities including Animals Asia, The Born Free Foundation, and the Jane Goodall Institute. In 2020 he won a prestigious Animal Star Ward for campaigning for animals and raising awareness. In 2021 he presented the BBC1 appeal for Hearing Dogs for Deaf People. Campbell is also an active supporter of Guide Dogs UK. He hosted their presentation in the main arena at Crufts in 2022. Honours On December 4, 2008, Campbell received an Honorary Doctorate from the Robert Gordon University, Aberdeen. Campbell was appointed Officer of the Order of the British Empire (OBE) in the 2015 Birthday Honours, for his services to children and adoption. In 2016 he was given an Honorary Doctorate from the University of Aberdeen.