The stolen cars are both BMWs - the medical car is an X5 and the safety car is an M240i.
The vehicles have a combined value of over £100,000 and officers are appealing for anyone with information to come forward.
The cars were stolen at 12.15am last night.
If you have seen these cars, or have information about this crime, contact Lincolnshire Police in one of the following ways:
• By calling 101 and quoting the reference 5 of 26th January 2021
• By emailing [email protected] - remember to put the reference 5 of 26th January 2021 in the subject box
• Alternatively, contact the independent charity Crimestoppers, anonymously, on 0800 555 111 or online at crimestoppers-uk.org