In England, ESE has had the formal status of being a "Listed Body" since at least 2011.
Prior to 2015, ESE had partnered with the University of Buckingham to award the final degrees. It appears that in early 2015, the partnership was dissolved by the University of Buckingham for "strategic reasons".
In July 2016, the ESE website indicates an anticipated new partnership with London Metropolitan University.
In January of 2018, it appears that ESE began to partner with the University of Chichester.
It is unclear which (if any) recognized UK university would award their degree for the ESE program of study in the intervening years; however, ESE remained on the list of "Listed Bodies" during this time.
ESE also has campuses in Italy and Spain. These ESE campuses were considered a "branch campus" of a recognized British HEI, based on their standing as a "Listed Body". Though campuses in both countries appear to have operated continually up until the present day, it is unclear what standing these campuses have in the countries where they are located since the partnership with the University of Buckingham ended in 2015.