Scotland is “worse than it has ever been” thanks to the independence debate causing total political paralysis at Holyrood on major domestic problems, a former first minister has said in a damning indictment of devolution.

Lord McConnell of Glenscorrodale said the country was “stuck in treacle”, with no progress on issues ranging from education to the economy to record drug deaths as both sides of the constitutional debate wait for another referendum.

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