Simplify the following text for a Grade 9 native English-speaking person.
Original: John Simon Bercow ( surname pronounce BER-COE ; born January 19 , 1963 in Middlesex , England ) is a British politician who is the Speaker of the House of Commons of the United Kingdom .
Simplified: John Simon Bercow ( ; born 19 January 1963 ) is a British politician who has been the Speaker of the House of Commons in the United Kingdom since June 2009 .