Do Apple AirTags work on the Underground?

Apple have a new product out, the 'AirTag' for you to attach to your keys, bag, backpack ... anything that you might be prone to losing, and then lets you track where it is so that you can find your lost item again - but does it work (using the Underground's Wi-Fi) if you lost something deep underground on the platform of a Tube station? Only one way to find out ...
Thanks to my tech friend David McClelland for helping with this! www.davidmcclel...
More in TfL's page about their station WiFi tfl.gov.uk/cam...
You can listen to the Frackulous podcast here frackulous.com/...