The UK is 58% self-sufficient in total cheese production, with Cheddar having a high self-sufficiency rate of 94%, while Mozzarella's self-sufficiency has grown from 64% in 2017 to 77% in 2019. However, there are concerns about the potential disruption of trade post-Brexit and the possibility of self-sufficiency in the cheese market. The data used is based on the milk processing capacity of mozzarella-producing sites and trade figures for fresh mozzarella, but there is a lack of official production statistics and potential under-reporting of trade under different codes.