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Derek Clark set up Northamptonshire's UKIP branch after retiring from teachingAn East Midlands' UKIP MEP has announced he will not seek re-election next June in case he "runs out of gas".
Derek Clark, 79, will have been a Member of the European Parliament for a decade by the time he stands down.
The retired physics and chemistry teacher set up Northamptonshire's UKIP branch in 1995.
He said last year's Corby by-election result and this year's county council election results showed the party is now in a strong position.
'Good old stint'Mr Clark is one of two UKIP MEPs for the East Midlands and before his election he served on the party's National Executive Committee for three years, including two years as party secretary.
He said: "I've done a good old stint and, while I haven't run out of gas yet, I will be 80 in October and I don't know if I may run out of gas.
"There's a lot of younger people coming up who will do a very good job so I'm standing down now as I don't want to let anyone down half-way through a term."
He added: "There's a lot of travel, not just to Brussels and Strasbourg, but also around the region - and yes I think my wife does want to see a bit more of me."
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