Joanna Page was born on 23 March 1977 in Treboeth, Swansea, Wales. She grew up in a supportive family environment, though detailed information about her parents is limited publicly.

She attended Mynyddbach Comprehensive School, where she was head girl, before training at the Royal Academy of Dramatic Art (RADA), graduating in 1998. Her early career involved theatre work before moving into television and film.

Page rose to fame playing Stacey Shipman in Gavin & Stacey (BBC), alongside roles in films such as Love Actually. Her acting career later expanded into presenting.

She has hosted Shop Well for Less (BBC One) and, more recently, Shift the Thrift (BBC One), a daytime series focused on charity shop finds and sustainable shopping.

Page lives in the UK with her husband and children and continues to work across television acting and presenting.