For the best part of 25 years, anyone on a budget who felt an urge to roam the homeland of Robert Burns could book themselves into the Turnberry caravan park on the rugged west coast of Scotland.

But this year, the latest owners of the Turnberry Holiday Park found it had not been growing as quickly as they had hoped when they bought it at the end of 2012. After surveying more than 1,000 people, they made an unpleasant discovery: nearly a third would be less likely to visit because they thought the park had something to do with the nearby Turnberry golf resort that Donald Trump bought in 2014.