According to the U.S Department of Education, University of Essex is an eligible accredited educational institution which allows you to claim education credit if you meet the requirements.
https://ifap.ed.gov/ifap/fedSchoolCodeList.jsp (click on the link under Federal School Code List and find the school name)
In order to e file, you do need to have the federal ID information. I would suggest you to contact the school. However, without that information, you will still be able to use the program to complete your return, print it out and submit to IRS by mail. (No federal ID, no e -file)
