Mirrored via: https://www.youtube.com/watch?v=IpqNjQKcciI

https://wiki.tfes.org/Bedford_Level_Experiment

https://en.wikipedia.org/wiki/Bedford_Level_experiment

https://www.gov.uk/government/collections/anglian-waterways-boat-registration-and-application-forms#boat-registration-(licence)-forms

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/779742/Anglian_Waterways_Application_For_Registration_of_Unpowered_Vessels_Annual_and_Short_Term.pdf