So you test was ELSA. (English Language Skills Assessment)
CEF = Common European Framework
EDI = Education Development International
I believe that ELSA scores may have a validity of 2 years.
I also think that EDI are no longer on the UKBA approved list.
I would strongly suggest you make contact to UKBA to confirm if the ELSA certification from EDI can be used
I'm sorry to say that I have a feeling if it's no longer on the UKBA approved list then it's no longer valid.