This work investigates the diversity and ecological status of indigenous British fauna and flora within their natural habitats. Brian Grimes provides a comprehensive survey of the species found across the United Kingdom, utilizing observational data and biological classification to categorize the wildlife of the region. The text serves as a foundational reference for understanding the environmental conditions and species distribution characteristic of the British Isles during the mid-twentieth century.

This text functions as a standard, accessible introduction to British natural history for the general reader. The scope suggests a focus on descriptive biology and regional identification rather than specialized ecological research.