Prof Diofantos Hadjimitsis (EXCELSIOR Coordinator) was an invited speaker at the Earth Observation Network seminar of Imperial College London, held online on the 24th of June 2021. Prof Hadjimitsis presentation was titled” Joining forces though the EXCELSIOR H2020 Teaming Project & ERATOSTHENES Centre of Excellence of the Cyprus University of Technology: Overview, Synergies, Earth Observation (EO) & Geoinformatics Activities, digital innovation hub in the Eastern Mediterranean, Middle East and North Africa (EMMENA) for EO”.