In 1904 the Marconi Company established a ship to shore radio station on the low lying land to the east of the town, but it took until 1912 before regular communications were established. For details and pictures see Friends of Tidemills site.
In more recent times, Newhaven was the point of departure for 1000 Canadian & Allied servicemen for the ill-fated Dieppe raid in 1942. Their memory is preserved by a memorial in the form of a granite plinth in a small garden of rememberence by the harbour.
Newhaven was very lucky not to have been removed from the map during the second world war. For in 1944 at about ten past five in the morning on the twenty second of November a barge loaded with 180 tons of ammunition and high expolosives being towed along along the coast broke free from it's tug and made landfall under the cliffs below the fort. The beach at that time was heavily mined and the explosion thus was set off. Had the barge come ashore in the harbour mouth or at tide mills which were also protected then Newhaven would have surely been flattened. The explosion broke windows in Lewes some seven miles north of Newhaven
In latter times an incident of notoriety occured in 1974 when a car owned by Lord Lucan, formerly Richard John Bingham, was found abandoned in Norman Road on the town on the 8th. November, some three days after his children's nanny was murdered and his wife attacked at their London flat. He has never been seen again!
Other residents have included Charles Wells the "man who broke the bank at Monte Carlo" casino, who bought a house in Fort Road with some of the proceeds, and Charles Webb, the author of "The Graduate"