I am a lecturer for the P&C paper; although very far away from the UK. I have never come across a text written for the P&C paper that is as comprehensive as "Strategic Marketing". Surely, Mr Ensor and his colleague must have placed the students interests at heart while writing the text.
This is a must read for all students preparing for the Planning & Control paper. The book provides a good feel of what strategy is about and students will be shown the importance of adopting a strategic perspective and thereby the formulation of a sound strategy right from the first chapter.
Finally, the book is also useful for those marketing practitioners to help them stay abreast with the more contemporary issues of marketing. As mentioned in Chapter 5, "The greatest danger in times of turbulence is not the turbulence; it is to act with yesterday's logic." (Drucker, 1980).
I think the two authors have in mind for the readers NOT to commit such mistakes. Read it and you shall find out how much or how little you know about "Strategic Marketing"!