New research carried out by Tourism Ireland has found that a growing number of people in Britain are booking their holidays later and will take fewer short breaks than normal in the next 12 months because of Brexit.
The survey also found that over half of British holidaymakers will spend less while on holiday because of the weaker pound.
Since the UK voted to leave the European Union three years ago, Tourism Ireland has conducted five pieces of research in Britain about attitudes towards Brexit.
The latest, carried out last month, saw 2,000 people questioned.
It found that unsurprisingly Brexit sentiment has become increasingly negative, with 80% of people now thinking pessimistically about the issue, up from 56% two years ago.
More than 30% of British people say they are planning to book their holidays later than they normally would, which is twice the number in 2017.
Brexit is also causing uncertainty among consumers, with 15% saying they will take fewer short breaks outside the UK in the next 12 months.
People are also one-and-a-half times more likely to postpone trips outside the UK than they were two years ago.
More than half of those surveyed also said they will spend less while on holiday because of the weaker pound.
The concerning findings support the latest official figures for overseas visitors into Ireland, which indicate the number arrivals from Britain so far this year is flat.
Anecdotally, those involved in the Irish tourism industry are also reporting lower numbers of British tourists on the ground in 2019.
The Brexit effect is also seeping into continental Europe, with further Tourism Ireland surveys finding that 17% of people in Germany were less likely to visit Ireland because of it.
While 13% of people questioned in France said the same, with a perceived hassle factor seen as the reason.