This coming Saturday, 27th. April, 2019, from 12 noon-4PM an event to mark International Marconi Day will take place at the Oxford Museum of the History of Science (to give it it's official title)
https://hsm.ox.ac.uk/. Entrance is free, although donations are requested. The Museum is in Broad Street, Oxford, OX1 3AZ (01865 277280) Please note that entrance to the museum involves 14 stone steps, and that the exhibition is on two different floors.