Background: Nicholas John Griffin (born 1 March 1959) is a British politician who represented North West England as a Member of the European Parliament (MEP) from 2009 to 2014. He served as chairman and then president of the far-right British National Party (BNP) from 1999 to 2014, when he was expelled from the party. Born in Barnet, Griffin was educated at Woodbridge School in Suffolk. He joined the National Front at the age of 14 and, following his graduation from the University of Cambridge, became a political worker for the party.
Context: The son of former Conservative councillor Edgar Griffin and his wife Jean, Nicholas John Griffin was born on 1 March 1959 in Barnet and moved to Southwold in Suffolk aged eight. He was educated at Woodbridge School before winning a sixth-form scholarship to the independent Saint Felix School in Southwold, one of only two boys in the all-girls school.  Griffin read Adolf Hitler's Mein Kampf when he was 14, and "found all but one chapter extremely boring". He joined the National Front in 1974, while he was still 14, though he had to pretend he was 15, and at the age of 16 is reported to have stayed at the home of National Front organiser Martin Webster. In a four-page leaflet written in 1999, Webster claimed to have had a homosexual relationship with Griffin, then the BNP's publicity director. Griffin has denied any such relationship.  From 1977, Griffin studied history, then law, at Downing College, Cambridge. His affiliation with the National Front was revealed during a Cambridge Union debate, and his photograph was published in a student newspaper. He later founded the Young National Front Student organisation. He graduated with a second-class honours degree in law (2:2), and a boxing blue, having taken up the sport following a brawl in Lewisham with a member of an anti-fascist party. He boxed three times against Oxford in the annual Varsity match, winning twice and losing once. In an interview with The Independent, he said he gave it up because of a hand injury. He is a fan of Ricky Hatton and Joe Calzaghe, and an admirer of Amir Khan.
Question: WHAT IS THE AGE HE JOINED NATIONAL FRONT?. Whats the answer?
He joined the National Front in 1974, while he was still 14,