Politicians of all parties have lined up to criticise plans for a shake-up which will see Scotland lose seven MPs.

Submissions to the Boundary Commission for Scotland, published yesterday, show widespread discontent with proposed changes to almost every constituency in Scotland.

Critics include Conservative Scotland Office minister David Mundell, who in his written submission said that it was of "considerable regret" that his seat was to be broken up.

And former Liberal Democrat leader Charles Kennedy protested that the plans ran counter to David Cameron and Nick Clegg's aim of increasing voter equality.

The Tory-LibDem Coalition plans to cut the number of MPs across the UK from 650 to 600, with seven to be lost north of the Border.

Labour has already accused the Coalition of "gerrymandering" over the plans.

The move is part of an exercise that will make each constituency of roughly equal size.

In comments made at a public hearing on the issue in November, but published by the Boundary Commission yesterday, Mr Kennedy said that the upshot would be the loss of one Highlands and Islands MP which "runs completely contrary to the stated aim".

If adopted in 2013, the proposed changes could see Mr Kennedy and his party colleague Danny Alexander, the LibDem Chief Secretary to the Treasury, battle it out for a seat.

The plan to cut MP numbers was initially put forward by the Conservatives who demanded the change be linked to plans to hold a referendum on electoral reform, an idea backed by the LibDems.