Susan I. M. Jameson (born 13 August 1941) is an English actress. She is best known for her roles as Jessie Seaton in When the Boat Comes In, Esther Lane in the BBC crime drama series New Tricks, and portraying Great Aunt Loretta in the CBeebies show Grandpa in My Pocket. She has also extensively performed in radio, notably voicing Mrs Wibbsey opposite the Fourth Doctor Tom Baker in a series of Doctor Who audio dramas. She also voiced audiobooks for all 52 novels by Catherine Cookson. (Via Wikipedia)