John,s 5: 
Northern Ireland
Northern Ireland pick 74b: 5 Pounds from 1998
4.8.1998. Blue and purple on multicolored underprint. Bank seal (Hibernia seated) at left, six county shields at upper center. With ascending size serial number at lower right. Queen's University in Belfast on back. Watermark: Medusa head.
Other Info
Condition:
UNC
Date:
1998-8-4
Serial #:
Y686689
Northern Ireland pick 203a: 5 Pounds from 1999
8.10.1999. Millennium Commemorative. Serial number prefix MM. Blue, red, and multicolored. Ovals, globe pattern. Space shuttle electronics on back. Polymer plastic.
Other Info
Condition:
EF
Date:
1999-10-8
Serial #:
MM1232599
Northern Ireland pick 340b: 5 Pounds from 2013
1.1.2013. Violet and brown on multicolored underprint. Rural and urban views of Belfast at left and right. Port with bridge at lower center.
Other Info
Condition:
Unspecified