Six people from Essex were arrested following the operation. Four other people were given cautions.
The arrests were made following patrols by officers around the Dartford Crossing in Thurrock and Kent during the afternoon and evening of Wednesday, 3 March.
The aim of the operation was to catch criminals using roads through the counties, particularly those involved in drug and knife crime.
It involved officers from various teams including the local policing team, roads policing, operational support group, police dog handlers, and the Special Constabulary.
Six people were arrested in Essex including a man, 28, of no fixed address, wanted on a court warrant and for recall to prison.
A boy, 16, from South Ockendon was arrested on suspicion of being involved in the supply of controlled drugs.
A man, 43, from Romford was also on suspicion of possession of class A drugs with intent to supply, and drug-driving.
Both were released under investigation while Essex Police continues its enquiries.
Two men, 30 and 37, from Barking and Stanford-le-Hope were arrested on suspicion of drug-driving and were released under investigation. Four other people were given cautions.
Two stolen vehicles were also found during the patrols, and eight more vehicles were seized for being uninsured.
Superintendent Craig Saunders said: “The aim of operations such as these is to prevent crime before it happens as well as to target offenders and respond to incidents.
“Working with neighbouring forces such as our colleagues in Kent is vitally important because criminal networks often span wide areas and borders.
“Our work yesterday is just part of what we’re doing every day to catch criminals and keep Essex safe and the range of tactics we use means there is nowhere for criminals to hide.”
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