Barclays has reached a settlement with a UK care operator over claims the bank mis-sold products linked to benchmark interest rates.The lender's employees and previous executives, including former Chief Executive Bob Diamond, had been due to testify in London's High Court on April 29th. It was seen as a test case for whether more customers might sue banks of the manipulation of LIBOR rates. Graiseley Properties accused Barclays of rigging LIBOR rates in selling interest rate hedging products to the parent company of Guardian Care Homes. The company sued Barclays for £70m. Barclays tried to get out of paying it, claiming the Guardian owed it the same amount."The parties have negotiated and agreed to a commercial restructuring of Graiseley's debt, which reflects the impact of changes in conditions in this sector over the last few years. Graiseley has withdrawn the litigation," a spokesman for Barclays said, according to Reuters on Tuesday.Guardian could not be reached for comment.RD