Susan I. M. Jameson (born 13 August 1941) is an English actress. She's best known for three roles: portraying Esther Lane in the BBC crime drama series New Tricks between 2003 and 2013, voicing Mrs Wibbsey opposite the Fourth Doctor Tom Baker in a series of Doctor Who audio dramas., and portraying Great Aunt Loretta in the CBeebies show Grandpa in My Pocket.…