Sussex Police has issued a warning to holidaymakers after more than 1,000 vehicles were found unattended in a boggy field near Gatwick Airport.
The force is working in conjunction with Horsham District Council and West Sussex County Council Trading Standards to investigate five companies suspected of operating illegally at the site.
The businesses claim to offer secure, reliable and affordable parking for people accessing the airport.
Officers are urging drivers to beware of rogue traders and only book with approved parking companies, pending the investigation.
Representatives from the police and the councils visited the field – the exact location of which is not being disclosed to protect customers' vehicles – on Wednesday (22 June).
On arrival, they discovered hundreds of keys to the vehicles in the boot of a car which was left open and unlocked, while several others were covered in mud.
In addition, some keys were left in envelopes on the windscreens of the cars they belonged to – in full view of anyone passing by.
We visited the site with the district council and trading standards with the aim of exposing and taking firm action against these unscrupulous rogue companies.
"I was disgusted but not overly surprised by the condition of the cars, because this appears to be an ongoing issue in the area. Some of the cars were stuck in thick mud and were unable to be towed away; let alone driven away.
"But one of the most worrying things we found was an insecure vehicle with the keys to hundreds of others left in full view in the boot. We were on site for about 45 minutes and not a single person was present to challenge us during that time.
There was nothing stopping us from accessing the field and no CCTV cameras anywhere in sight, which is a real concern.
Clearly, what is being advertised by these companies and what is actually happening are two completely different things, and we'd like to make people aware of this.
The chances are, if something seems too good to be true, it probably is.
More than 1,000 cars have been left unattended in a muddy field by companies promising to provide 'off-site' parking for Gatwick Airport.
More than 1,000 cars have been left unattended in a muddy field by five companies promising off-site parking for Gatwick Airport.