Citi has been appointed as depository and custodian by Tatton Investment Management Ltd for the Tatton fund range in the UK. Apex FundRock has been appointed as the authorised corporate director. The appointments cover multiple UK fund umbrellas and approximately GBP10bn (USD13.5bn) AuM. Alongside the ACD mandate, Apex will provide fund administration and transfer agency, as well as middle office and trade execution services.