In BM (false passport) DRC  UKUT 467 (IAC) the Upper Tribunal concludes:
The mere fact that an asylum claimant utilised a false passport or kindred document in departing the DRC will not without more engage the risk category specified in [119(iv)] of BM and Others (Returnees: Criminal and Non-Criminal) DRC CG  293 (IAC). The application of this guidance will be dependent upon the fact sensitive context of the individual case. The Tribunal will consider, inter alia, the likely state of knowledge of the DRC authorities pertaining to the person in question. A person claiming to belong to any of the risk categories will not be at risk of persecution unless likely to come to the attention of the DRC authorities. Thus in every case there will be an intense focus on matters such as publicity, individual prominence, possession of a passport, the standard emergency travel document arrangements (where these apply) and how these matters impact on the individual claimant.
Note that a fact sensitive assessment is required in all cases.