GORDON Brown was embarrassed by his own troops last night as the Scottish Parliament demanded a referendum on the EU Treaty.

Labour’s members north of the border abstained on a vote calling for a nationwide poll, allowing it to go through.

Their refusal to block the demand left the PM red-faced.

He has repeatedly declined to hold a referendum despite a Sun-led campaign showing eight out of ten voters want one.

The Scottish defiance was largely a symbolic gesture as they have no power to dictate Mr Brown’s policy.

But pressure for a Scots-only poll will almost certainly grow.

Last night the Open Europe think tank described the vote as “a huge embarrassment for Gordon Brown on his own turf”.

A spokesman added: “It is now unthinkable that he can push through the constitution without a national vote.”

The SNP, which controls Scotland, deliberately called the vote to rattle the PM, whose seat is in Fife.