From 23-25 November 2015, the M24 Symbitron progress meeting was held at the Imperial College campus in London. The first day of this meeting was combined with a Scientific Advisory Board meeting. Three SAB members were updated on the progress made in the first two years of the project via short presentations. At the end of the day a small symposium, open for everyone, was organized, where the three SAB members presented their own work and projects. Day 2 and 3 of the meeting were used for the usual presentations about the progress made in the last 1/2 year and the plans for the future. Furthermore, there was labtour and some demos with the Achilles were given.