The largest collection of Pokémon memorabilia belongs to Lisa Courtney (UK), with 14,410 different items as of 14 October 2010, which she has been collecting for over 14 years. Her collection includes items from the UK, USA, France and of course Japan. She has made several trips to Japan for the specific purpose of collecting Pokemon merchandise, each time sending between 8-12 boxes full back to the UK. Part of the collection (including her GWR certificate) has been displayed at the Museum of Hertford as part of an exhibition on popular culture.
Comments below may relate to previous holders of this record.