Parkinson will take up the new position in August, joining Brewin’s executive committee and reporting directly to chief executive David Nicol.
He replaces previous COO Thomas Lack, who resigned earlier this year to join Pemberton Asset Management.
Parkinson will oversee the company’s operations departments including business support, change delivery, dealing, information technology, premises and facilities management.
Parkinson spent five years at Coutts, and has been COO at the bank since June 2013.
He was also chairman of RBS Asset Management Holdings and a board member of RBS Services (Switzerland).
Prior to joining Coutts in July 2012, he spent 10 years at McKinsey & Company and Barclays Wealth.
“We are extremely pleased to be hiring a person of Grant’s calibre to this vitally important position,” said Nicol.
“He has outstanding and relevant commercial experience at both Coutts and before that at Barclays Wealth.
“He joins at a crucial moment in Brewin’s development where the firm is on a clear growth trajectory, and it is more important than ever to have a seasoned executive in this role.”
