Tim Costley is a National Party [15] Member of Parliament for the Ōtaki electorate [12].
Costley served as a helicopter pilot in the Royal New Zealand Air Force (RNZAF), beginning from 2001 [2]. According to a single reputable secondary source, he held various leadership positions as an officer within the RNZAF during that period [3]. The same source indicates he served as Equerry to Prince William [5].
Costley is reported to have studied at Massey University, according to a single reputable secondary source [10]. Outside his military career, he is described in a single reputable secondary source as a founder and trustee of The Missing Wingman Trust, a trust associated with the RNZAF [6][9]. He is also noted, according to a single reputable secondary source, as a trustee and beneficiary of the Costley Family Trust and the RV Shankleton Trust [7][8].
He was selected as the National Party candidate for Ōtaki on 18 November 2019 [14]. Costley was elected to Parliament as the Member for Ōtaki, with his term recorded as beginning on 14 October 2023 [12]. According to a single reputable secondary source, he has served as a member of the Foreign Affairs, Defence and Trade Select Committee [13].