Scottish Yes vote would present challenges for UK

As Scots went to the polls to vote on whether they would become an
independent nation, people in other parts of the United Kingdom
watched anxiously.

A yes vote would present a new set of security questions for the UK
and could also cost Prime Minister David Cameron his political future.

Ira Spitzer reports from London.

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VO SCRIPT:
The Scottish flag is flying over Downing Street… but for how much longer.

Perhaps no one is watching more closely that Prime Minister David
Cameron, who on Wednesday admitted to some nervousness.

SOT - DAVID CAMERON

"Well of course everyone who cares about our United Kingdom, and I
care passionately for our United Kingdom, is nervous. But I'm
confident that we've set out how Scotland can have the best of both
worlds, a successful economy with a growing number of jobs we see
today.

VO SCRIPT:
However some lawmakers have questioned whether David Cameron can
remain as Prime Minister in the event of a Yes vote. Journalist Alex
Stephenson explains.

SOT - ALEX STEPHENSON, POLITICAL EDITOR,POLITICS.CO.UK

David Cameron would face an unprecedented constitutional crisis if
Scotland votes yes, it's going to be a huge challenge for the British
government and at the moment it's a nightmare for ministers here in
London

VO SCRIPT:
Some analysts, like Douglas Murray from the Henry Jackson Society,
have also expressed concern about Britain's future security in the
event of a yes vote.

SOT - DOUGLAS MURRAY, HENRY JACKSON SOCIETY)

"If Scotland did pursue entirely separate security policies as the
Scottish say they will, then it's impossible you couldn't have a
border. You would need a border that we knew and the rest of the
United Kingdom knew who was coming in here, which security threats the
Scots may not care about at all, but that we would very much care
about.

VO SCRIPT:
Despite the lack of rallies and flags, the future of the United
Kingdom a question on the minds of those in the remaining parts of the
United Kingdom…who have no say in the outcome. For now those south of
the border can only wait for their Scottish counterparts to decide if
they're staying with the union, or going their own way. Ira Spitzer,
London