Contact Us Mailing Address: NAS Group Durham LimitedA310 Howden RoadAycliffe Business ParkNewton AycliffeCounty DurhamDL5 6EU Phone: TEL. 0191 377 9922( 08.00 – 18.00 Monday – Friday) MOB. 07834 753185(Evenings & Weekends) FAX. 0191 377 8186 Notice: JavaScript is required for this content.