Of the 52 assessed species, 27 were categorized as Least Concern (LC) by the IUCN, one Near Threatened (NT), five Vulnerable (VU), seven Endangered (EN) and 12 Critically Endangered (CR). We assessed the risk of sampling limited diversity for all species. In total, 14 species were assessed as low risk, 22 species as moderate risk and 16 species as high risk. In general, LC species were more likely to have low sampling risks while EN and CR species were more likely to have high sampling risks (Figure 1A). Additionally, the species that were assessed as high risk were often associated with life history traits such as being rare in the UK, with a scattered distribution or poor seed dispersal method. Species that were associated with low risk of sampling limited diversity were often widespread with no evidence of population fragmentation or had an effective dispersal method. These species were more likely to have connected gene flow.