U.K. companies see big losses on currency hedges.

Group used instant messages to coordinate strategies to manipulate currency market.

Group used instant messages to coordinate strategies to manipulate currency market.

Libor and similar benchmarks unsustainable in the long run,' CFTC head says.

Libor and similar benchmarks unsustainable in the long run,' CFTC head says.

Benchmark rate ignored the crisis in Cyprus, with just four out of 18 banks showing increase in dollar borrowing cost.

Benchmark rate ignored the crisis in Cyprus, with just four out of 18 banks showing increase in dollar borrowing cost.

Misconduct deemed 'more serious than Barclays'; damning e-mails released.