Antiferroelectric materials are attracting extensive attention due to their potential in energy storage applications. These materials exhibit a double polarisation-field hysteresis loop which allows for high storage capacities with low loss. However, despite this interest we still know very little about the behaviour of antiferroelectrics. Lead zirconate is the prototypical perovskite antiferrolectric. We believe gaining an enhanced understanding of this material will allow us to tune and develop new materials for energy applications. One way to understand the effects of doping (chemical pressure) is to perform high pressure studies. In this way we can probe phase stability and look to replicate exciting phases under ambient conditions. In this proposal we seek to revisit the high pressure phase diagram of lead zirconate.