There is also concern over the validity of the NHS health passport in some EU countries, and signs that a third Covid jab will likely be needed as a booster this winter.
Here are the key national headlines affecting travel on Wednesday (25 August).
UK self-catering prices soar in pandemic
UK self-catered accommodation is costing an average 40% more than in summer 2019, according to Which?. Its analysis, with BBC Panorama, suggests holidaymakers are paying an average of £300 more per week in August compared to before the pandemic, with increases of 49-89%. (BBC News)