| Devine Motorsport Limited | Arts & recreation | 2007 |
| Donnelly & Taggart (Ballymena) Ltd | Wholesale & retail | 2003 |
| Donnelly Bros of Caledon Limited | Wholesale & retail | 1960 |
| Donnelly Bros. (Belfast) Limited | Wholesale & retail | 1997 |
| Donnelly Bros. Garages (Dungannon) Limited | Wholesale & retail | 1930 |
| Doon Investments Limited | Construction | 1994 |
| Dromore Community Pre-School Playgroup Limited | Administrative & support | 1999 |
| Drumlish Developments Limited | Real estate | 1996 |
| Drumquin Enterprise Limited | Real estate | 1992 |
| Dynes Flooring Contractors and Interiors Ltd | Construction | 2006 |
| Easteden Limited | Real estate | 1996 |
| Eastern and Midlands Holdings Limited | | 2007 |
| Eden Property Investments Limited | Real estate | 2006 |
| Edeneast Limited | | 2003 |
| Eglish Builders (Merchants) Limited | Construction | 1989 |
| Electronic Display Services Ltd | Information & communication | 1999 |
| Elmerdale Ltd | Wholesale & retail | 2003 |
| EM Automation Ltd | Manufacturing | 2006 |
| Emerald Organics Ltd | Manufacturing | 2002 |
| EML Meadowlane Limited | Real estate | 1991 |
| Enstand Limited | | 1999 |
| Equipment Sales NO.3 Ltd | Construction | 2001 |
| ES Cookstown 1719 Limited | Real estate | 1987 |
| Euro OIL (Strabane) Ltd | Other services | 1991 |
| Eurofab Engineering Structures Ltd | Manufacturing | 2006 |
| Ewing Properties Limited | Transport & logistics | 1997 |
| Farm Relief Enterprises N.I. Ltd | Agriculture & fishing | 1992 |
| Farrell Brothers Limited | Construction | 2002 |
| Farrell Fencing Products Ltd | Manufacturing | 2004 |
| Ferguy Heights Management Company Limited | Extraterritorial | 2006 |
| Ferris Electrical Ltd | Construction | 2009 |
| Ferson Brothers Limited | Construction | 1996 |
| Fintona Plant Hire Limited | Wholesale & retail | 2006 |
| First Steps Day Care | Other services | 2004 |
| Fleet Image Limited | Extraterritorial | 1995 |
| FOX Building & Engineering Ltd | Construction | 2001 |
| G.& O. Electrical Services Limited | Professional & scientific | 1978 |
| Garden Corner Limited | Agriculture & fishing | 2007 |
| Gardrum Holdings Limited | Professional & scientific | 2006 |
| Gardrum Properties Ltd | Real estate | 1998 |
| Gary Millar Poultry Equipment Ltd | Agriculture & fishing | 2006 |
| GB Landscapes (NI) Ltd | Administrative & support | 2006 |
| Geda Construction LLP | | 2005 |
| Genealogy Ireland Limited | Other services | 2006 |
| Glen Top Electrical Services Ltd | Construction | 2007 |
| Glencairn Management Company Limited | Households | 2007 |
| Glendale Limousines (Omagh) Limited | Transport & logistics | 2003 |
| GNT Properties Limited | Real estate | 2005 |
| Gormleys Engineering Works Limited | Manufacturing | 1979 |
| Gortalowry Developments Ltd | Real estate | 2003 |
| Gorthill Farms Limited | Agriculture & fishing | 2007 |
| Grangefort Limited | Construction | 2002 |
| Granville Food Care Limited | Manufacturing | 1974 |
| Greystone Joinery & Construction Limited | Construction | 2006 |
| Guram Investments Ltd | Extraterritorial | 2002 |
| Gwentwood Properties Limited | Households | 2007 |
| H. & R. Lyons Limited | Wholesale & retail | 1974 |
| H.&H. Gordon (Strabane) Limited | Professional & scientific | 1966 |
| Hayes (Properties) Limited | Hospitality | 1979 |
| Henry Marshall Brown Limited | Professional & scientific | 2005 |
| Heron Manufacture Limited | Manufacturing | 1997 |
| HGV Engineering Ltd | Wholesale & retail | 2001 |
| Hillcrest Farm Limited | Agriculture & fishing | 2003 |
| Hilltop Fuels Limited | Wholesale & retail | 1996 |
| Hot Tubs Omagh Limited | Wholesale & retail | 2000 |
| I S Farrell Limited | Agriculture & fishing | 2002 |
| Icar Parts Ltd | Wholesale & retail | 2026 |
| Ideal Furnishings Limited | Wholesale & retail | 2002 |
| Innish Joinery Limited | Construction | 2003 |
| Integrated College Dungannon | Education | 1994 |
| Irish World Ltd. | Other services | 1984 |
| J & V Construction Ltd | Construction | 2006 |
| J Caulfield & Co Ltd | Financial services | 2000 |
| J P K Colhoun Chemist Limited | Wholesale & retail | 2003 |
| J.M. Autoparts Limited | Wholesale & retail | 1983 |
| JAN Pick Limited | Real estate | 1947 |
| JAP (Morecambe) LLP | | 2007 |
| Javlin Formwork Ltd | Construction | 2001 |
| JBK Limited | | 1997 |
| Jermon Developments Limited | | 1995 |
| Joe's Bar Limited | Hospitality | 2002 |
| John Donnelly Developments Limited | Construction | 1995 |
| John Mackle (MOY) Limited | Manufacturing | 1971 |
| Johnston Heath Limited | Extraterritorial | 1999 |
| Johnston Meat Packers Limited | Extraterritorial | 1986 |
| Johnston-Heath International Limited | Administrative & support | 1995 |
| Joseph Barrett & Sons Limited | Manufacturing | 1988 |
| K.J. Properties Limited | Hospitality | 1996 |
| Karlan Developments Limited | Extraterritorial | 2003 |
| Kevin Jordan Construction Limited | Construction | 2004 |
| Kevlin Healthcare Ltd | Health & social care | 2009 |
| Kildress Plumbing Suppliers Limited | Wholesale & retail | 1982 |
| Kill Plumbing Limited | | 2008 |
| Killymoon Bespoke Living Ltd | Manufacturing | 2003 |
| Kilmurn Construction Ltd | Professional & scientific | 2004 |
| Knockeden Development Company Limited | Real estate | 1988 |
| KT4 Ltd | Wholesale & retail | 2004 |
| Kyle Restaurants Ltd | Hospitality | 2003 |
| Landmore Limited | Real estate | 2001 |
| Larkfield (Commerce) Limited | Hospitality | 2006 |