Wikipedia
Tanoshimi was the United Kingdom arm of US publisher Random House and was responsible for the publication of their English Language Manga titles. Its relationship with Random House was the same as Del Rey, which released the same Manga titles for its parent company in the United States.
The company came into existence in June 2006, and has since released ten new Manga titles and over 50 books into the UK market. Since 2009 Tanoshimi no longer licenses manga volumes for distribution in the United Kingdom. To continue to follow manga volumes previously released by Tanoshimi, imports could be made from Del Rey in the United States. With the closure of Del Rey, ongoing titles (such as Negima) are now being published by Kodansha Comics USA.