 The Covid-19 pandemic has seen multiple strains of the virus emerge and spread across the world. In England, for main strains have been identified, wild type, alpha, delta, and armichrome. The study examine how these strains differed in terms of their transmissibility and severity. It was found that each strain had different characteristics, with armichrome having the highest transmissibility and alpha the highest mortality rate. Additionally, it was determined that non-pharmaceutical interventions, such as social distancing, were essential in reducing the spread of the virus. This article was authored by Pablo N. Perez-Gusman, Edward Nock, Nozuko Amai, and others.