David Cameron spoke of his relief earlier at the news that a rescue attempt to free Helen Johnston, an aid worker from Stoke Newington captured by the Taliban, had been successful
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The London property market is expected to be the hardest hit as buyers sit it out to see how the economy will be affected.
The former London mayor paid tribute to David Cameron just hours after the Prime Minister announced his resignation.
The pound crashed to its lowest level in 30 years as Britain voted to leave the EU.