Airports across Europe are set to tighten their hand luggage restrictions from September 1, following the discovery that new security scanners 'did not meet standards'. This comes after the UK government's decision in June to reintroduce restrictions on liquids, despite plans to scrap the 100ml limit. The U-turn was labelled as a temporary measure, but no end date has been provided.

Now, the EU Commission has issued new guidelines reverting to previous hand luggage restrictions. This means all plane passengers at EU airports will be limited to carrying liquids of no more than 100ml in their carry-on bags. The stricter rules will come into effect from September 1.

READ MORE Ryanair-approved Antler hand luggage that's so 'classy' is £50 off READ MORE £31 Amazon backpack 'can fit everything I need even for a week' - and it's easyJet friendly In a statement, the EU said it had taken this "precautionary measure" due to information that the performance of explosive detection equipment "did not meet the standard for which it had been approved." As a result, UK tourists will not be able to pack liquids of more than 100ml in their hand luggage for their return journeys, reports Birmingham Live. Several airports, including some of Spain's busiest such as Madrid-Barajas and Barcelona-El Prat, had already upgraded their security technology, but will now have to revert to the old restrictions until the issue is resolved.

Passengers may now be able to keep their 100ml liquids inside thei.