Ending his political career, Britain's ex-leader Cameron resigns as a lawmaker

LONDON, Sept 12 (Reuters) - Britain's former prime minister David Cameron said on Monday he was resigning from his seat in parliament, ending his political career just weeks after he lost a referendum to stay in the European Union to avoid becoming a "distraction."

Cameron, who came to power in 2010, said he had told Prime Minister Theresa May of his decision to stop representing his constituency in Oxfordshire to make way for someone who could concentrate on the area in central England.

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"I've thought about this long and hard over the summer and I've decided the right thing to do is to stand down as the member of parliament for Witney," he told BBC TV.

"In my view with modern politics, with the circumstances of my resignation, it isn't really possible to be a proper back bench MP (lawmaker) as a former prime minister. I think everything you do will become a big distraction and a big diversion from what the government needs to do for our country."

The former prime minister, 49, stepped down as leader in June shortly after 52 percent of Britons ignored his pleas and voted to leave the European Union, saying the country needed "fresh leadership" to negotiate the country's exit, or Brexit.

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Cameron had sat on the 'back benches' of parliament several times since he resigned the top job, but made little impact. He had earlier said he would complete his term in office until the next election due in 2020.

May has moved to distance herself from some of Cameron's policies, particularly in education where she has ditched his pledge not to increase the number of selective grammar schools.

"I support her, I support what's she doing, and she's got off to a cracking start," Cameron said. "Obviously I'm going to have my own views about different issues ... That's really the point." (Reporting by Elizabeth Piper and William James; editing by Michael Holden)