Siân Tierney is a seasoned public policy and communications professional with extensive experience in the political and public sectors. Currently serving as a Senior Associate - Public Policy Manager at Ofcom since September 2025, Tierney previously held the role of Strategic Communications and Public Affairs Lead at The Jockey Club from February 2022 to September 2025. Notable prior positions include Head of Incumbency Campaigning at The Conservative Party from May 2017 to February 2022, along with various leadership roles in the same organization. Tierney's career also features experience as Communications Manager at the Cabinet Office and several administrative positions within The Conservative Party. Academic background includes attendance at Bexley Grammar School.
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