Gatwick Airport has said operations are “returning to normal” after four days of fog-related flight restrictions. More than 20 flights planned for the West Sussex airport on Monday were cancelled in advance.

Much of the UK has been shrouded in fog in recent days and the weather is having an impact as airports attempt to resume their normal flight schedules.

Disruption continues at Gatwick Airport for a fourth day as thick fog causes flight cancellations and delays during the airport’s busy holiday period. A spokesperson for the airport has confirmed that air restrictions will be kept in place because of low visibility in airfields affected by fog.