The number of applications for Irish passports from people living in Great Britain has almost doubled since the UK voted to leave the European Union, BBC reported on Wednesday.
New figures from the Irish Department of Foreign Affairs show that between July and September the number of GB applications rose by 96%.
There were 3,431 applications in September 2015, compared to 7,518 in September 2016.
Year-on-year applications from Northern Ireland have also risen since the vote. They have increased by two-thirds in the three months since the Brexit decision. Everyone from Northern Ireland is entitled to both British and Irish citizenship as a result of the 1998 Good Friday Agreement.
In terms of numbers, there have been 15,757 applications from people in Northern Ireland since July, compared 9,401 in the same period last year.
The Northern Ireland-only figures show demand was strongest at the end of the summer with 63% rise in July, 79% rise in August and 62% rise in September.
In Great Britain, the trend has been upwards over the past three months with 73% rise in July, 104% rise in August and also 119% rise in September.
There have been 21,549 Irish passport applications from people in Great Britain
since July, compared 10,959 in the same period last year.