This project will investigate the effect of long-term cyclic loading (1000s of cycles) on the performance parameters (displacement/rotation) of foundations. The prediction of wind turbine foundation response to cyclic loading under complex loading regimes remains uncertain, particularly in light of forecasted extreme weather patterns due to climate change, therefore the long-term useability of foundations requires investigation. This project will make use of novel experimental developments at UON centrifuge facility, which enable efficient actuation of hundreds of thousands of loading cycles on foundation systems, as well as in-flight variation of the cyclic load ratio (changing from one-way to two-way loading). The project will also consider the effect of installation method of the foundation systems (wished-in-place or driven) to ascertain the effect on the foundation response to loading.