The government suffered a big blow today as new figures showed the cost of living went up by half a percent to 2.7 per cent between September and October.
The hike in university tuition fees and increasing household food costs are being blamed.
Watch Economics Editor Richard Edgar's report:
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The Labour leader did not say whether he would maintain Britain's nuclear deterrent programme.
Ukip leader Paul Nuttall also said he would want to get rid of Sharia courts.
Over 40,000 people picked up their packs to take part in the annual marathon in the capital.