NOTE 1:
For these purposes a holder of a UK Examiner Certificate is any holder of a valid FE,
TRE, CRE, IRE, SFE or FIE certificate issued by the UK CAA.
Interesting, because that list does not include RTF Examiners who were the first people to be authorised to do this back in 2005!
"Language proficiency: English", which is all it says on my licence? Does this imply level 6
If you were issued with a licence originally that contained English Language Proficiency, then that would probably have been the result of a Level 6 on the original licence application form which the applicant signed.
If you were reissued a licence with English Language Proficiency on it, with no action from you, it will be Level 4.
If you have re-validated a licence, any upgrade to Level 6 will have been on the form signed by the applicant therefore; anyone with Level 6 should know about it . If you don't you can only assume Level 4.