In the the Penultimate week of Operation Dragonfly, 13 people have been charged with drink and drug-driving offences in Sussex and Surrey.
The operation which is to crack down on drink and drug-driving offences, began last month.
The campaign saw officers out on patrol actively looking for driving offences and behaviour behind the wheel that may be caused by the driver taking intoxicating substances.
Alongside the 13 people charged, a further nine have been arrested – five are on bail pending further enquiries and four have been released without charge.