George Osborne has said that breaking the union between Scotland and the rest of the UK, "would represent a very deep dive in to uncharted waters."
"Let's be clear, abandoning current arrangements would represent a very deep dive in to uncharted waters. Would a newly independent Scottish state be prepared to accept significant limits on its economic sovereignty.
"To submit its budgetary plans to Westminster before Holyrood, to constraint the degree of tax competition between Scotland and the rest of the UK. To accept some continuing oversight and what is the economic case for the remaining UK?"
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A 61-year-old woman was taken to hospital with head injuries after the incident in Islington, north London.
Counting will begin on Saturday morning, with the result expected later in the day.
There have been a number of incidents involving heavy goods vehicles getting stuck and causing disruption in recent months.