Final answer:
The EU provided funding for the Centre for European Studies (CES) Prize in Eastleigh, which covered the cost of professional copyediting.
Step-by-step explanation:
In Eastleigh, the European Union (EU) provided funding for the Centre for European Studies (CES) Prize in 2015. This publication was awarded the prize, which covered the cost of professional copyediting. The CES Prize is a recognition of excellence in European studies and helps support the publication's production.