The summit is the first of its kind and comes amid the backdrop of growing security concerns among the UK and EU countries about the influence of Russia.
The business roundtable on Thursday morning included industry leaders and businesses across tech, finance, clean energy, manufacturing and construction from the UK and Ireland.
The discussion focused on potential opportunities for growth and investment, and how the UK and Ireland can work together to build an even more resilient and successful trading relationship.
They also discussed how both countries can work closer together on renewable energy, tech, AI and security.
The two leaders have announced a new data sharing arrangement aimed at increasing the production offshore energy.
As part of the summit, Ireland also announced new investments into the UK worth £185.5 million, which the UK government say could create more than 2,500 jobs across the country.
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