THE Sandford Mill Science Education Centre will be celebrating International Marconi Day (IMD) with a programme of activities.

Guglielmo Marconi, the inventor of radio, completed much of his work in Chelmsford and the first regular entertainment broadcasts were transmitted from a hut in Writtle in 1922, which now sits in the engine house at Sandford Mill, in Sandford Mill Road.

IMD is held to celebrate Marconi’s birth on April 25 1874. Entrance to the engine house, plus demonstrations, will take place between 10am and 5pm on Saturday.