
Allied Irish Banks, p.l.c. is one of the so-called Big Four commercial banks in Ireland. AIB offers a full range of personal, business and corporate banking services. The bank also offers a range of general insurance products such as home, travel and car. It offers life assurance and pensions through its tied agency with Irish Life Assurance plc.

CPL Resources PLC is a human resources company based in Dublin that operates in Ireland and Europe. CPL was founded by current CEO Anne Heraty and Keith O'Malley as Computer Placement Ltd in 1989. Currently, the group has 12 companies spread over 21 offices: 12 in the Republic of Ireland, two in Northern Ireland, and seven in the rest of Europe.

CRH plc is an international group of diversified building materials businesses, with headquarters in Dublin, Ireland. It manufactures and supplies a wide range of products for the construction industry. The group was formed through a merger in 1970 of two leading Irish public companies, Cement Limited and Roadstone Limited (1949). CRH has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. It has secondary listings on the Euronext Dublin and New York Stock Exchange.

Fyffes plc is a Japanese-owned fruit and fresh produce company headquartered in Dublin, Ireland. The Fyffes brand is most closely associated with the banana industry, although it is applied to a wide range of fruits and fresh produce, including the Fyffes Gold Pineapples, mushrooms and Fyffes melons.

Independent News & Media plc (INM) is an Irish media organisation based in Dublin that publishes national daily newspapers, Sunday newspapers, regional newspapers and operates multiple websites including Independent.ie. INM operates throughout Ireland. Its titles include the highest circulation daily and Sunday papers in Ireland. Independent News & Media is a wholly owned subsidiary of Mediahuis.

Hibernia REIT plc is a public real estate investment trust headquartered in Dublin, Ireland. The company owns 32 properties in Dublin, and has a portfolio valued at €1.309 billion. It is listed on Euronext Dublin's ISEQ 20 index, as well as the London Stock Exchange.

Kerry Group plc is a public food company headquartered in Ireland. It is quoted on the Dublin ISEQ and London stock exchanges.

Kingspan Group plc is a building materials company based in Ireland trading in over 70 countries with 159 factories employing over 15,000 people. The company operates with five divisions; Insulated Panels, Insulation, Light & Air, Water & Energy, and, Data & Flooring.

Origin Enterprises plc is a focused agri-services group providing specialist on-farm agronomy services and the supply of crop technologies and inputs. The group has leading market positions in Ireland, the United Kingdom, Poland, Romania and Ukraine. Origin is listed on the ESM market of Euronext Dublin.

Permanent TSB Group Holdings plc, formerly Irish Life and Permanent plc is a provider of personal financial services in Ireland.

Tesco plc is a British multinational groceries and general merchandise retailer headquartered in Welwyn Garden City, England. It is the third-largest retailer in the world measured by gross revenues and the ninth-largest in the world measured by revenues. It has shops in five countries across Europe, and is the market leader of groceries in the UK.

Tullow Oil plc is a multinational oil and gas exploration company founded in Tullow, Ireland with its headquarters in London, United Kingdom. Tullow has a primary listing on the London Stock Exchange. It has secondary listings on the Ghana Stock Exchange and Irish Stock Exchange.