blˈʌndɛl hˈæzbiːn ˈæktɪv ˌɔn ɛnvˌaɪɹənmˈɛntəl ˈɪʃuːz, fˈɜːst æz tʃˈɛɹ ʌvðə plˈænɪŋ kəmˈɪɾi ʌvðɪ ˈɑːksfɚd sˈɪɾi kˈaʊnsəl nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvənti θɹˈiː, dˈʊɹɹɪŋ ðə tˈaɪm wɛn ɪt stˈɑːpt ðə bˈɪldɪŋ əvə mˈoʊɾɚwˌeɪ θɹuː ðə sˈɪɾi sˈɛntɚ, pˈɛdɪstɹˌiənaɪzd mˈʌtʃ ʌvðə hɪstˈɔːɹɪk sˈɛntɚ, ænd mˌeɪd nˈɔːɹθ ˈɑːksfɚd ɐ kˌɑːnsɚvˈeɪʃən ˈɛɹiə.
Blundell has been active on environmental issues, first as Chair of the Planning Committee of the Oxford City Council (1970–73), during the time when it stopped the building of a motorway through the city centre, pedestrianised much of the historic centre, and made North Oxford a conservation area.