Go to the BBA LIBOR website. (Registration required)
Search Datastream (available at Barcelona and Madrid Libraries through LSEG Workspace): LIBOR data is in category Interest Rates. Best to search for UK interbank for UK GBP LIBOR, Japan interbank for Japanese Yen LIBOR, etc. Datatype is IO (offered rate), Source is British Bankers' Assoc.
Note: LIBOR does not appear in the name of the series.
