Police are searching for some 26 people involved in the violent disorder and attacks on officers at the illegal rave at Twyford Woods on May 23-24, 2015.
A total of 21 police officers and one police dog sustained injuries while police were working to disband the illegal rave, which lasted almost 48 hours.
The injuries sustained by officers involved soft tissue injuries, cuts and scratches. Three officers, two from Derbyshire and one from Lincolnshire required hospital treatment.
The worst of the injuries was a suspected broken jaw which turned out not to be broken, and another officer sustained a fractured wrist.
Some 13 people were charged in relation to the incident and a further six people were cautioned for possession of drugs. Court hearings are pending.
Police now say work is ongoing to bring to justice all those responsible who took part in any kind of criminal offences which during the event included violent disorder, assault on police, criminal damage, dealing in drugs, failing to stop for police, and failing to abide by direction to leave.
At one point some three hundred officers were involved in the policing response.
DCI Nikki Mayo said: “The enquiry into this incident is lengthy and complex. A team of officers have been tasked with investigating the illegal rave and we are absolutely committed to bringing to justice and putting before the courts all those who engaged in any kind of law-breaking.
“The behaviour of some individuals that was displayed towards police and witnessed by communities during this incident was abhorrent. It will not be tolerated.
“We are appealing for help in identifying the individuals shown in these images because we would like to speak to them in connection with the enquiry.
“If you know them or know who they are then please contact us as soon as you can on the non-emergency number 101 quoting incident 137 of 11/09/2015”.