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Superluminous supernovae (SLSNe) are incredibly luminous signposts indicating our understanding of massive stellar evolution is lacking. They are rare transients peaking at luminosities 100 times those of typical supernovae comma and are not explicable by the current paradigm of iron-core collapse in massive stars. As such comma alternative competing models have arisen to explain their explosion mechanism comma each with consequences for the putative progenitor systems. The nature of SLSN progenitors comma primarily their age and metallicity comma are shared with their parent stellar population comma thus comma as with other transients comma study of the environments has proved fruitful. Early work with HST looking at the resolved host galaxies of SLSNe has revealed tenuous constraints for the progenitors comma such as a preference for low-mass comma compact star-forming hosts. Recent surges in discovery and classification of SLSN mean the sample is now over 200 events comma most from the last few years. This public survey will provide a corresponding surge in the number of SLSN host galaxies observed with high-resolution UV imaging comma to allow environment work by the community to keep pace with the burgeoning samples. HST uniquely affords the near-UV depth and spatial resolution to study the morphology and sizes of the compact host galaxies. Crucially comma the location of the SLSNe can also be pinpointed within their hosts to identify the parent stellar population. By comparing SLSN environments to those of core-collapse SNe comma gamma-ray bursts comma and theoretical expectations from progenitor models comma the new sample will allow for robust constraints to be made for the progenitor systems comma even across SLSN sub-types.