Toby Young said Labour's new position on free schools is unfair to those not living in thriving cities.
Mr Young, who started a free school earlier this year, said it would leave those in rural communities unable to start free schools.
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Rain will spread eastwards across southern areas tonight. Clear and frosty in the north.
Political leaders will go head-to-head at ITV's studios in MediaCityUK in Salford, ITV has confirmed, as the set for the event is unveiled.
More than 100 people claiming to represent working people across Britain have signed a letter backing Labour in the general election.