Only a third of Brits who set a travel budget stick to it, according to a new study. Recent research also revealed that holiday overspending has reached its highest levels in a decade. That’s despite families continuing to feel the strain of the cost-of-living crisis, and debt advice inquiries surging. Travellers also seem more prone to overspending in some destinations than others. Corporate travel company Good Travel Management ranked the countries around the world where travellers are most likely to splurge. A European country took the top spot, where holidaymakers pay £45 (€55) over their …