Bank of Ireland GB - Contact Us. Tel: Please note that Bank of Ireland does not have Branches or Business Centres in Great Britain. Looking for ways to Contact us? We have a number of different channels that can help you with your query, Twitter, Boards or Facebook messenger. Useful Application Forms · Change of Address · Customer Complaints Process. Bank of Ireland Mobile Banking is designed to help you perform your banking 'on the go' and in a way that is convenient to you. Our app has a host of features.