Salmond: 'Independence vote will be Scotland's big decision'

First Minister Alex Salmond has said a vote on independence will be Scotland's biggest decision for 300 years.

In a BBC television interview, he defended his plan to hold a referendum in 2014.

Mr Salmond argued that fundamental constitutional change required a "considered timetable".

The first minister was in London to deliver the Hugo Young lecture, following in the footsteps of politicians such as David Cameron.

Nick Robinson reports.