Ordnance Survey of Northern Ireland
Colby House
Stranmillis Court
Malone Lower
Belfast
BT9 5BJ
Customer Helpline Tel: 028 90 255755
Fax: 028 9025 5700
E-mail: osni@osni.gov.uk

To download a location map (pdf) of Colby House please click here.

To make a complaint or provide feedback please click here.