Hilary Mary "Britt" Allcroft (gebore 14 Desember 1943) is 'n Engelse aktrise, skryfster, en vervaardiger. Sy is bekend vir haar rolle in die rolprente Thomas and the Magic Railroad (2000) en Mumfie's Quest: The Movie (2014), en in die televisiereekse Thomas & Friends (1984) en Shining Time Station (1989). 1995: The Thomas the Tank Engine Man 2000: Thomas and the Magic Railroad 2008: Thomas & Friends: The Great Discovery - The Movie 2010: Thomas & Friends: Misty Island Rescue 2011: Thomas & Friends: Day of the Diesels 2012: Thomas & Friends: Blue Mountain Mystery 2012: Thomas & Friends: A Very Thomas Christmas 2012: Thomas & Friends: Sticky Situations 2014: Mumfie's Quest: The Movie 2015: Thomas & Friends: Sodor's Legend of the Lost Treasure 2016: Thomas & Friends: The Great Race 2017: Thomas & Friends: Journey Beyond Sodor 2017: Thomas and The 2 Brothers 2018: Thomas & Friends: Big World! Big Adventures!