Just want to draw your attention to a thread at Rotorheads.

Essentially if your JAR license doesn't show the level of your language proficiency, your license is invalid. UK-issued JARs do not have the level stated. Most States are turning a blind eye, but the Irish and the French aren't.

You need a CAA letter in your hand.

See this

وإلى أي مدى والجهاز المركزي للمحاسبات سوف تحاسب على حرف

Here I was thinking you had written something rude

In answer to your question, probably about 60 pounds

a while ago I got a slip through the post to add to my UK Licence.

19 days after my 4th request for info I had a reply. . . I guess they are busy with the EASA stuff
If you email/fax a completed form SRG1199 they will send you a letter (paper or electronic, didn't ask) confirming your English proficiency.
There was no mention of a fee, and, given that it is in reality an omission to define your level in your licence page , on their part, I see no reason why there should be.

A licence verification letter, if you need one, is 43 quid these days.

it should be very easy then,
juat ask those Irish or French to give you an English Language test...