The Foreign Affairs Minister says he sees no reason why there should be a dedicated minister for Brexit.

Charlie Flanagan spoke to the Seanad this afternoon on the subject of Britain's intention to leave the European Union.

British prime minister Theresa May has said her government will trigger Article 50 before the end of March 2017.

Once triggered, EU rules allow for two years of negotiations before Britain must leave - although the deadline can be extended if all parties agree to allow extra negotiations.

Yesterday, the Irish Government confirmed it will hold an all-island forum on Brexit next month.

Invitations will be extended to a range of civic society groups and businesses, as well as representatives of the main political parties on the island.

Budget 2017 will also include measures to deal with the specific risks of a British exit from the EU.

Amid concerns over the potential impact of a Brexit on Irish people, businesses and borders, Minister Flanagan says there is communication between his departments and all other parts of the Government.

He added that those close ties mean there is no need for a dedicated Brexit minister.

"My Department of Foreign Affairs has a unique role in coordinating a response to Brexit," he explained.

"As you know, the department works closely right across Government, and at all times and all policies area with an international or north-south dimension," he added.