• Johnson Brothers (Belfast) Limited

• JSP Recruitment

• Juno Paints

• Just mist wholesale ltd

• Juvo Limited

• JW Hire & Sales Ltd.

• K & K Windows

• K & K Windows

• K&C Norton Wholesale Foods Ltd

• Kabzy

• KANECO LTD

• Keane Windows

• Keegan Precast Limited

• Keely Group Ltd

• Keen-M Imports Ltd

• Kefron

• Kelco Communications Ltd

• Kelly Hunter Trading Ltd

• Kepak

• Kerry Phone Centres

• KES Group

• Kilbride Consulting

• Kildare Post

• Killeen Engineering Ltd