This is an excellent book, full of sound advice. Ostensibly divided into seasons, it contains several essays on different subjects - game, cake, cold soups, baking, pancakes etc, each with a number of recipes and tips. It was published nearly 40 years ago, but remains extraordinarily relevant to the way we try to cook now. I found it reminiscent of Simon Hopkinson (indeed, it's recommended in his 'Roast Chicken...'), so if you enjoyed his books, you'll like this.
The recipes are the book's heart though. This is how British food should be - interesting, satisfying, unfussy - and not substituting novelty for taste.