SCOTTISH members of Britain's biggest union have voted heavily in favour of having a question on additional powers for Scotland in the independence referendum.

An internal survey carried out for Unite found about two-thirds of its members in Scotland want the option of voting for further power for the Scottish Parliament on the ballot paper.

The poll showed 62% replied "yes" when asked if they wanted the devo max question with 38% saying "no".

People aged 65 and over were the most firmly against the proposals.

Men and women were almost equally split on the question though there was a slight bias in favour of "yes" from women and "no" from men.

Quotes from respondents in favour included: "More power gives us more say in Scotland and what happens."

Those against included replies saying "it's too vague a question and would confuse the issue over independence".

Unite's Scottish regional secretary Pat Rafferty said: "The survey already reflects what the Scottish people are already saying – that a majority want a second question."

A spokesman for First Minister Alex Salmond said: "This is an interesting survey, and underlines exactly why the terms and the timing of the referendum are matters to be decided in Scotland."