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UK travellers will need to be prepared for potential delays as they will need to have their fingerprints and facial images taken.

All prospective visitors will need to complete an online application and a €7 fee will be required from those between ages 18 and 70.

Unions UGT and CCOO have called on workers to walk out between Dec. 29 and Jan. 7.

Inquiry has been launched amid ‘alarming’ concerns that it could cause massive disruption.

In 2014, the EU Court of Justice ruled that hand luggage must be free of charge.