At its peak , Barclays had 5,100 employees and 600 offices in Spain .
Barclays sold its Retail Banking unit in Spain to Caixabank in 2014 .
At Barclays ' peak , Barclays had 5,100 employees and 600 offices Spain Spain .
Barclays sold its Retail Banking unit in Spain to Caixabank in 2014 .