• Durcan Timber & Garden Products

• Dycon Ltd

• Dyson

• E | Net

• Eagle Eye Networks

• Eakin Healthcare Group

• Eastbrook

• Eazysafe

• eBay.ie

• EC CHARGING

• Ecanvasser

• eCAT

• ECI Lighting

• Eco Group Services Ltd

• Eco Living

• Ecovolt

• Edgescan

• EET Europarts Ltd

• Effective Software

• Electric Escapes

• Electricity Saver Ireland

• Electro Dynamics Ltd

• Electro Logic Heating

• Electromaintenance