The Serious Fraud Office said five more rate-rigging convictions may be “unsafe” after the UK’s Supreme Court overturned the conviction of Tom Hayes in July.

Jury directions given at Hayes’ trial that led the Supreme Court to quash his conviction may also apply to the cases of former Barclays traders Jonathan Mathew, Jay Merchant, Alex Pabon, Philippe Moryoussef and Colin Bermingham, the SFO said in a statement.