One of the main results achieved from the project so far are an increased understanding of the very early times after the SN explosion both from an observational perspective and from a theoretical perspective. The other is the studies of the diversity of supernovae explosions that although we have found good model matches to all the new transients have suggested that circumstellar interaction may play a much more prominent role than previously thought.This project is split into two work packages (WP1 and WP2) and work has been progressing on both of these in tandem. WP1 focuses on producing a combined sample of multiple progenitor probes (early light curves, circumstellar material, late-time observations) for Type Ia supernovae and good progress is being made with a number of publications published or in the final stages of preparation. WP1 focuses on understanding exotic thermonuclear transients and comparing them to modelling predictions. Magee, Maguire et al. 2020 (10.1051/0004-6361/201936684) and Magee & Maguire 2020 (10.1051/0004-6361/202037870) have focussed on constraining different methods of producing flux excesses in the early light curves of Type Ia supernovae by comparing a new model grid to observations. A postgraduate student is studying early light curve properties of Type Ia supernovae from the Zwicky Transient Facility and the connect to theoretical predictions (Deckers, Maguire, et al. in prep). A paper looking at helium signatures (a probe of certain explosion mechanisms) is in preparation led by a postgraduate student (Skillen, Maguire et al. in prep). A recently completed postgraduate studenthas published one paper, Clark, Maguire, et al. 2020 (10.1093/mnras/stz3598) and has another in preparation (Clark, Maguire et al.). Dr. Prentice works full-time on WP2.1 and WP2.3 and investigating unusual classes of exotic transients in the transient data streams as part of the project with four papers published during this reporting period, two within the last year, Prentice, Maguire, et al. 2020a (10.1051/0004-6361/201936515) and Prentice, Maguire et al. 2020b (10.1093/mnras/staa2947). The PI has worked on both WP and has studied unusual thermonuclear transients from very soon after explosion to late times (Maguire et al. in prep.)