Holyrood: It’s all over bar the shouting.

First Minister Alex Salmond during First Minister's Questions at the Scottish Parliament in Edinburgh. Photo: PA

It’s all over bar the shouting.

Well, we hope there won’t be too much shouting in the independence referendum campaign, though we can’t be sure.

What is all over until after 18 September is the weekly exchange in the Scottish parliament at First Minister’s question time.

Holyrood goes into recess from today for the period of the referendum.

FMQs as it’s affectionately known can often generate a lot of heat and not very much light.

Today at midday there was quite a lot of heat, but also some light was shed on the way the campaign is likely to go in the next four weeks.

Labour leader Johann Lamont used the comments yesterday of oil industry magnate Sir Ian Wood to attack Alex Salmond.

Sir Ian has questioned the SNP’s predictions on oil revenue, saying they could be over-estimated by between 45% and 60%.

Prime Minster David Cameron with Sir Ian Wood, one of the founding fathers of the North Sea oil industry. Credit: PA

Ms Lamont probed this but used it as a jumping off point for a more general attack on Mr Salmond.

The First Minister had no ‘plan B’ on currency, on Europe and on oil. He was, the Labour leader said, “a man without a plan”.

So this is how Labour, and most likely the Better Together campaign which includes the Tories and Liberal Democrats, will take the fight to the SNP and its leader.

While accepting that Sir Ian was indeed well respected Mr Salmond’s view was that oil would last well beyond 2050.

But he took great delight in using comments from Labour MP Ian Davidson who the First Minister quoted as saying the SNP was fulfilling the place Labour used occupy to in politics.

First Minister's Questions at the Scottish Parliament in Edinburgh. Credit: PA

Labour, Mr Salmond said, did not have a ‘Plan A’ let alone a ‘Plan B’.

Knockabout stuff but within it the kernel of the SNP attack on Labour: that the Nationalists have replaced the party (Labour) which once ran most of Scotland.

And, therefore, that the voters who once voted Labour in large numbers but switched to the SNP in Holyrood elections should take the next logical step and vote ‘Yes’ on September 18.

Whether they will not not, remains to be seen.

But as politicians head off to the campaign trail we now have an idea of how both sides will conduct at least one strand of the referendum debate.

Holyrood will be quiet without them but we can be sure our MSPs will be making plenty of noise across the country over independence - perhaps including a bit of shouting - between now and September 18.