The fallout from the Brexit vote has sparked a surge in online interest in Irish passports and moving to Ireland.

As world politics and money markets reeled from the poll, data from Google showed queries on citizenship in the Republic began to increase last night and peaked in the early hours of the morning.

Likewise from lunchtime on referendum day searches on the web for information about moving to Ireland began to heat up and peaked in the early hours today.

GoogleTrends said UK searches for "getting an Irish passport" jumped more than 100% after the Brexit result came through.

And while the data analysts would not reveal the exact number of searches for information on the Republic's citizenship rules, they said most interest was shown in Northern Ireland with the normally unionist heartland of Holywood, Co Down, taking top spot.

Figures from Ireland's Department of Foreign Affairs earlier this month showed the total number of Irish passport applications from Britain this year is 3,334 - up very slightly from 3,239 over the same period last year.

Officials also cautioned that there have been significant fluctuations in recent years and applications from Britain were only a fraction of what they were from 2007-09.

A Senator in the Irish parliament, Neale Richmond, urged passport officials to be ready for the so-called Cascarino effect, recalling Jack Charlton's tactic of picking British footballers with Irish heritage when he managed the Republic of Ireland.

Mr Richmond, who has two English cousins who recently applied for Irish passports, said: "British citizens with Irish grandparents applying for Irish passports could now move from a torrent to a flood."

And in another development, Google Trends showed many were seeking information about the EU, indicating that a good number of those who cast or did not cast their vote yesterday were not aware about the implications. 

Google reported sharp upticks in searches not only related to the ballot measure but also about basic questions concerning the implications of the vote. About eight hours after the polls closed, Google reported that searches for "what happens if we leave the EU" had more than tripled.

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