0906 GMT - Tokenized collateral could help firms move and manage assets more easily, the Bank of England's executive director for financial market infrastructure says, referring to the use of digital tokens linked to real assets as debt collateral. Speaking at the Digital Assets Week conference in London, Mills says tokenized collateral must meet certain conditions. The legal rights attached to collateral must be clear, while assets must have clear valuations, Mills says. Tokenized collateral must also be reliable and available when needed, particularly in times of financial stress, Mills says. Companies developing tokenized assets should discuss risk management with the Bank of England, the executive director adds.