Australian Diana Spencer wins a competition in a women's magazine, and as a prize gets a trip for two to London, where she wants to meet her idol and namesake, Princess Diana. She goes there with her fiance, Mark, but during the garden party the Princess plans to attend, things get mixed up and Aussie Diana gets arrested with Paparazzi photographer Rob. Diana really wants to meet the Princess and follows Rob as he searches for Princess Di to take some photos.

Toni Collette
as Diana Spencer

Dominic West
as Rob Naylor

Malcolm Kennard
as Mark Fraser

Victoria Eagger
as Carol

John Simm
as Neil

Serena Gordon
as Sarah

Roger Barclay
as Richard

Tom Hillier
as Neville

David Baldwin
as Dog Owner

Victoria Longley
as Pauline Challinor