Over a third of British holidaymakers who travelled overseas for a summer break this year were worried about an influx of refugees and migrants in their destination, according to a new study.
Some 17 per cent reported being "very concerned" while 18 per cent described themselves as "quite concerned", the poll of 2,000 UK holidaymakers found.
Tens of thousands of refugees and migrants fleeing the war in Syria arrived at popular European Union holiday destinations including the Greek islands of Kos, Lesbos and Samos this year.
The poll also found that four in 10 people felt they could not relax on their foreign holiday this year because they were worried about a terror attack.
Some 22 per cent said they were "very concerned" about the threat of terrorism, while 18 per cent were "quite concerned".
There have been a number of high-profile attacks at tourist resorts in recent years.
In June a gunman shot dead 38 holidaymakers - 30 of whom were British - in the Tunisian coastal city of Sousse. Islamic State claimed responsibility for the attack.
Despite the fear of terrorism, over three in four (77 per cent) holidaymakers said they did not consult guidance from authorities before choosing their destination.
Only 12 per cent claimed they studied the official guidance and acted on it.
The fear of terrorism was cited as a key reason for people choosing to stay home for their holiday.
Of those who had a so-called "staycation" this year, some 61 per cent said the terror threat was an important factor in their decision.
Only cost and a good weather forecast were seen as being more influential.
Affordability was cited by 91 per cent and the weather was given by 82 per cent of holidaymakers as important factors.
The research was commissioned by the organisers of travel trade exhibition World Travel Market (WTM) which opened in London earlier this week.
WTM senior director Simon Press said: "The travel industry is going through a testing time and, although terrorist attacks are rare, the fact is that fear, uncertainty and risk all play a part in holidaymakers' decisions nowadays.
"The challenge for travel companies and tourist destinations is to be able to reassure customers that they are as prepared as possible to deal with a terrorism attack and are able to react swiftly with clients' safety the prime concern.
"The good news is that 68 per cent of companies that responded to the WTM Industry Report research have evaluated or taken action on security and resilience within their business as a result of recent terrorist attacks.
"This figure shows how important the industry is taking its responsibility."
