No specific, verifiable evidence detailing actions taken by London Underground to review the administration of the Code of Practice for materials, or to ensure compliance in new works, modernisation, or maintenance, has been provided in the input. Searches on gov.uk for "Fennell Inquiry recommendation implementation", "london underground shall", and "materials london underground" indicate the existence of related official documentation, but specific content for FENN-67 is not available. No relevant legislation has been identified on legislation.gov.uk. Given the inquiry's age (1987), and the absence of specific published evidence of action, the status is unclear.