The home secretary told MPs that going on holiday was “not a valid reason” to leave home during the current lockdown and that the police presence at ports and airports would be increased.
“Anyone who does not have a valid reason for travel will be directed to return home or they will face a fine,” she added.
But there are fears that people who have already spent substantial sums of money on booked flights and accommodation will refuse to return home, take a £200 fine, and proceed with their holiday.
Speaking to journalists on Thursday, the chair of the National Police Chiefs’ Council (NPCC) said police will not automatically stop travellers choosing to continue their journeys under current coronavirus legislation.