British holidaymakers looking for an adrenaline rush could risk invalidating their travel insurance, Moneysupermarket has warned.

Research from the comparison site revealed 37% of British holidaymakers have taken part in daredevil activities while abroad, including rock climbing, white-water rafting and bungee jumping. However, not all travel insurance policies cover extreme sports as standard. In addition to that, Moneysupermarket has found that one in eight UK travellers don’t purchase any insurance at all.

Peter Gerrard, head of insurance research at moneysupermarket, said: “While impulse activities such as bungee jumping and rock climbing may maximise the holiday experience, some popular insurers such as Direct Line or Endsleigh classify these as dangerous sports and you may not be covered if anything goes wrong.

“Travel insurance policies will vary significantly and exclusions and caveats are common. It is important to check the small print and ensure you are covered for every eventuality. I advise Brits to think ahead about activities of interest before shopping around for the most adequate level of cover and best value policy.”