From:
http://www.statesavings.ie/Downloads/SavingsBondsTermsAndConditions.pdf (Link from
www.anpost.ie)
5. Savings Bonds may be repaid by making an application for repayment using the form prescribed by An Post. Such application should be made at least seven working days before repayment is required to An Post, Savings & Investment Services, Repayment Section, GPO, Dublin 1.
You can get the repayment form in a Post Office. As I recall repayment is by either cheque or a warrant that can be cashed in a Post Office