MPs say an independent Scotland would threaten pension provisions.
Pensions are the latest focus of the independence battle.
A trio of Labour MPs claim 61% of elderly Scots want their pensions paid from UK taxes and not Scottish.
The party say support could increase further as the number of over 60s in Scotland is projected to grow from 22 to 32-percent by 2035.
The 'Keep our British Pensions' campaign has been launched in Lochgelly.
Labour pensions spokesman Gregg McClymont says it's unclear what would happen to pensions in an independent Scotland:
Meanwhile, the SNP have described today's campaign as 'lacking in credibility'
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