Chrimes, Mike (September 2016). "Recognition for historic foot tunnel"(PDF). New Civil Engineer. p. 69. Archived(PDF) from the original on 12 August 2016. Retrieved 11 August 2016.(subscription required)
royalgreenwich.gov.uk
"Foot tunnels history". Royal Borough of Greenwich. Archived from the original on 2 October 2021. Retrieved 2 October 2021.
Chrimes, Mike (September 2016). "Recognition for historic foot tunnel"(PDF). New Civil Engineer. p. 69. Archived(PDF) from the original on 12 August 2016. Retrieved 11 August 2016.(subscription required)