Katie Martin, Baroness Martin of BrockleyKatherine Lucy Martin, Baroness Martin of Brockley is a British political aide.CareerMartin was chief of staff to Chancellor of the Exchequer Rachel Reeves. She was previously director of public affairs for Citizens Advice. She was also head of philanthropic partnerships at The Guardian and managing director of the company Ideas42. She was nominated for a life peerage as part of the 2025 Political Peerages to sit in the House of Lords as a Labour peer, and was created Baroness Martin of Brockley, of Ladywell in the London Borough of Lewisham on 20 January 2026.