Notarangelo’s resignation comes before the publication of an independent review by Deloitte into the charity’s governance.

The umbrella organisation for the Citizens Advice service in Scotland revealed plans for the assessment in March following the departure of chief executive Margaret Lynch and the loss of finance director Jon Dye.

Agnes Robson is a former senior civil servant, who was a member of the main management board of the then Scottish Executive. She is also a former board member of Citizens Advice Edinburgh, where she has been a volunteer advisor for the last eight years.

On taking on the role, Agnes Robson said: “The Citizens Advice network is a Scottish institution that has served the general public for 76 years, and delivers a vital service to the thousands of clients who come to us for advice.

“While this is a period of challenge for CAS, I know from my experiences as a volunteer and a board member that the network fulfils a hugely valuable role in Scottish society and has deep roots in local communities.

“I am personally committed to ensuring that the outcome of our current governance review will enhance the ability of the organisation to support the Citizens Advice network as a whole to deliver the essential services on which our clients rely.”