bunq's Bank Identifier Code (BIC or SWIFT code) differs depending on what country the bank account you use is from. These are:
NL IBANs = BUNQNL2AXXX;
DE IBANs = BUNQDE82XXX;
FR IBANs = BUNQFRP2XXX;
ES IBANs = BUNQESM2XXX;
For the Local Currency feature is from the United Kingdom and has a UK IBAN and has a BIC/SWIFT code TCCLGB3LXXX.