Simplify the following text for a Grade 9 native English-speaking person.
Original: Oliver Postgate ( born Hendon , Middlesex , England , 12 April 1925 died Broadstairs , Kent , 8 December 2008 ) was an English animator , puppeteer and writer .
Simplified: Oliver Postgate ( 12 April 1925 â `` 8 December 2008 ) was an English animator , puppeteer and writer .