Choosing a course of study for a PhD after completing a master’s in English depends on your specific interests and career goals. Here are a few potential areas that you could consider, depending on your preferences:

1. Comparative Literature: This field explores literature across different cultures and languages. It allows you to analyze and compare literary works from various traditions, which can provide a broader perspective and deepen your understanding of literature.

1. Cultural Studies: Cultural studies examine the relationship between culture, society, and identity. It encompasses various disciplines, including literature, sociology, anthropology, and media studies. This interdisciplinary approach can offer new insights into how literature reflects and shapes cultural phenomena.

1. Linguistics: If you are interested in the scientific study of language, pursuing a PhD in linguistics can be a suitable choice. Linguistics investigates the structure, meaning, and use of language, offering opportunities to explore language acquisition, sociolinguistics, psycholinguistics, and more.

1. Creative Writing: If you have a passion for writing and aspire to become a professional writer or a writing instructor, a PhD in creative writing can provide the necessary training and academic expertise. It typically involves a combination of writing workshops, literary analysis, and scholarly research.

1. Digital Humanities: This emerging field combines technology and humanities disciplines. By incorporating digital tools and methodologies, you can explore new ways of analyzing and presenting literary texts, conduct data-driven research, or delve into digital storytelling and interactive narratives.

1. Critical Theory: Critical theory examines the underlying power dynamics and social structures within literature and society. It draws upon various theoretical frameworks, such as feminism, postcolonialism, Marxism, and poststructuralism, to analyze literature and culture critically.

Ultimately, the best course for your PhD will depend on your research interests, career aspirations, and the available resources at the universities you are considering. It’s essential to thoroughly research each program and consult with professors or advisors in your field to make an informed decision.