“7. ... we are ... certain that nobody should have assumed that it was part of the function of the Court Interpreter to resolve an issue of this sort. We come to that conclusion for two separate reasons. The first relates to the function and expertise of an interpreter. An interpreter’s function is to comprehend and communicate, not to assess or analyse. A person’s skills in interpretation lie in his ability to understand what is being said to him in one language (or dialect) and communicate it accurately in another language (or dialect). It is simply wrong to say that the abilities of an interpreter necessarily import an ability to distinguish accurately between different dialects and to be able to attribute dialects to different sources. A person whose first language is French may attain standards of near perfection in English interpretation, without being able to say with accuracy whether he is dealing with a person from Ipswich or Indiana, or even with a person whose own first language was not English. As an interpreter he may widen his vocabulary base and his understanding of different accents and dialects so that he can cope with whatever version of English is used by the person for whom he is interpreting, without needing or wanting or being required to consider or work out what the dialect is, but merely to do his own job of understanding and communicating. Of course an interpreter may know (or think he knows) something about the type of language or dialect the person for whom he is interpreting is using: but that is quite a different matter. It is not part of his function as interpreter. 8. An interpreter may find that he cannot interpret, because he cannot understand what is being said to him. That may be because it is a language that he does not understand, or may be because it is a dialect that he does not understand. But, so far as his function as an interpreter is concerned, the only thing one can say is that in present circumstances he cannot interpret. It is still not part of his function as an interpreter to identify the language (or dialect) that he cannot understand. It is sufficient that he cannot understand it. An interpreter who speaks and understands more than one language or dialect may be able to say with precision which he is working in, or he may not. No doubt he is more likely to be able to distinguish between two languages than between two dialects, but the boundary between the notions of different languages and different dialects is a rather fluid one. In KS ((Minority Clans – Bajuni – Ability to speak Kibajuni) Somalia CG[2004] UKAIT 00271 ) it appears that the interpreters used were able to distinguish clearly between Swahili and Kibajuni and did so. It does not follow from that, and it could not [properly] be taken to follow from that, that every interpreter ought to be able to distinguish every language or dialect. 9. That leads us to the second reason. It is in our view in the highest degree undesirable for the interpreter as a Court official to be asked to contribute in any way to the determination of a contested issue. In his task of comprehension and communication, the interpreter needs to have and maintain the confidence of all those with whom he deals, including the witness [whose evidence] is being interpreted, the representatives of both parties and the judge. He cannot maintain that confidence if there is the slightest suspicion that he is, in addition, taking some part in assessing the evidence, on which he will in due course report to the Court. .... The Court Interpreter is a vital part of the immigration appellate process. It is very important that the interpreter’s position should not be compromised in any way. The interpreter is not himself a witness and should not be invited to become one. If it happens that the interpreter cannot understand the language or dialect being used, he will of course have to say so. At that point it may be necessary to check that the language requested by the person whose evidence is to be interpreted is indeed a language that falls within the interpreter’s portfolio. But it is unlikely that any more detailed information from the interpreter could properly form the basis of the Tribunal’s findings of fact. 10. We see no reason to dissent from the Tribunal’s observation in SA and others that an expert who speaks a particular language or dialect is more likely to be able to provide evidence of whether another person speaks that language or dialect than is a person who does not have that linguistic competence. But it does not follow from that (and we venture to suggest that nobody could think it followed from that) that every person who speaks a particular language or dialect is to be regarded as an expert, able to assess whether some other person that language or dialect, or, if not, what dialect is being spoken. 11. For these reasons we reject [counsel for the appellant’s] submissions that the interpreter ought to have been regarded as an expert, able to give evidence as an expert, and ought to have been required to give his view on the language or dialect being spoken by the appellant. We also reject his submission that what occurred at the hearing was unexpected or unfair. There as no proper reason toassume that the Court Interpreter would become an expert witness in the case.”
“43. In AJH when dealing with an assessment of whether a Claimant is Bajuni, the Tribunal wrote in paragraph 33 as follows: ‘What is needed therefore in cases in which claims to be Somali nationals and Bajuni clan identity are made is first of all: (i) an assessment which examines at least three different factors: (a) knowledge of Kibajuni; (b) knowledge of Somali depending on the person’s personal history; (c) knowledge of matters to do with life in Somali for Bajuni (geography, customs, occupations, etc.). But what is also needed is (ii) an assessment which does not treat any one of these three factors as decisive: as the Tribunal noted in Omar ...It is even possible albeit unusual that a person who does not speak Kibajuni or Somali could be a Bajuni.’”