Clarke succeeds Ian Hodgkinson, who retired in December last year after a 40 year career with the organisation.
He joins from Lloyds where he was area director, mid markets for the Thames Valley and South region of the UK.
Prior it that, Clarke’s career encompassed stints with the RBS Group as well as at Barclays where he worked as a corporate director in the UK and a number of international locations including Botswana, Seychelles and South Africa.
The brief of his new role will cover intermediaries, corporates and personal banking.