London’s centuries-old gold market is to usher in an era of transparency with plans to reveal how much bullion is held in vaults in and around the city, including those controlled by the Bank of England.

The LBMA plans to release the monthly vault data on a three-month lag, according to people involved in the process. It will show gold bars held by the BoE, the gold clearing banks, and those operated by the security companies such as Brink’s, which are also members of the LBMA, according to a person involved in setting up the programme.