Star-formation histories of galaxies resident within the most clustered regions of the protocluster, core galaxies (left panel), compared to those in the more sparsely populated regions, non-core galaxies (right panel). The SFHs of each galaxy are indicated by a coloured line. We indicate the median star-formation rate in each time bin with the black line and the associated MC error shaded in grey. The core galaxies exhibit more extended SFHs, with a declining SFR over the previous ∼10 Myr, while non-core galaxies are characterised by strong ongoing bursts which largely began over the last ∼20 Myr.