Since a record of Dark Green Fritillary at Edwinstowe in 1999, there have been a number of sporadic occurrences since. Although there is a case for a number of these records to be accepted as being genuinely wild, the records from some sites are certainly the result of captive-bred releases. The most regular site where it was possible to see Dark-green Fritillary in recent years has been Cotgrave Forest, where it certainly occurred each year between 2011 and 2015.