A travel expert has urged UK tourists to beware of some key travel information if you are travelling to Spain or Portugal from this week.

Which? has issued advice regarding how to approach your holiday following the power cuts which have recently affected Spain, Portugal, Andorra and parts of France.

The consumer insight organisation has told holidaymakers to avoid cancelling your holiday, especially if your flight is still operational, or risk “losing all your money.”

Travellers heading to Spain or Portugal this week are advised primarily to check in with the latest advice from the airport you are travelling to, your airline or tour operator.

READ MORE: Spain power cut reason becomes clearer as national grid operator issues statement

While power has been restored to all affected areas of Spain and Portugal, Which? acknowledge there may still be some disruption which has caused a “knock-on” effect.

However, it highly advises those travelling this week not to cancel your holiday if your flight is departing, as it will leave you out of pocket.

The “consumer champion” said: “Power has been mostly restored to all affected areas in Spain and Portugal. But the disruption has caused some knock-on effects, such as flight cancellations and delays.

“You’ll typically find the most up-to-date advice from airline apps and airport social media feeds, rather than their websites.

“If your flight is still operating, you’ll lose your money if you decide not to travel – unless you’ve booked a more expensive flexible fare.

“The best advice is not to cancel. You will lose all your money if you do so, and you won’t be able to claim via travel insurance.”

For customers who have booked package holidays, Which? has said providers may offer travellers the option to rebook if “the disruption continues and it looks like this will affect the holiday.”

READ MORE: ‘I was stuck on a train during the Spain power cuts for over nine hours’

It said: “You’re protected by the package travel regulations, which means the holiday must be delivered as described.”

Which? added those with a holiday booked over the next few weeks are unlikely to be affected by the power outage, with airports back to usual operation and no reports of further electrical issues.

It added: “It’s unlikely that holidays in the coming weeks will be affected by the power outage. The electricity supply has been mostly restored, airports are back up and running, and there are no reports of further power cuts.

“Reach out to your tour operator or airline if you’d like to know more. And if you haven’t yet got travel insurance, organise it with a reputable provider as soon as possible.”