He will appear at a London court on Thursday, said David Jones, an SFO spokesman.
Hayes, a British national who worked in Tokyo, was arrested in the U.K. probe on December 11 and charged by the U.S. Justice Department the following day, along with one of his former co-workers from UBS. The U.S. charge was made public on December 19, the same day UBS was fined by U.S., British and Swiss regulators for trying to rig Libor and similar benchmarks.
The SFO said: 'Tom Hayes, a former trader at UBS and Citigroup, has today been charged with offences of conspiracy to defraud in connection with the investigation by the Serious Fraud Office into the manipulation of LIBOR.
Tom Alexander William Hayes, 33, of Surrey was one of the three individuals arrested and interviewed on 11 December 2012 by officers from the SFO and City of London Police. He attended Bishopsgate police station this morning where he was charged by City of London Police with eight counts of fraud. He will appear before Westminster Magistrates' Court at a later date.
The SFO's investigation into the manipulation of LIBOR continues'.
image: © Lisamarie Babik