FWIW I find the Guardian website better than the Felicity Cloake books. The books don't have any pictures in them which makes them less inviting and the comments section on the articles is often handy.
I used to print them out at work and stick them in a notebook - not anymore since being at home. Also do the same with the Waitrose mag/paper which usually has nice recipes and means I can easily annotate. Could probably do the same thing with and iPad these days I suppose.
Oh nice.
So I looked... and it seems ace, and this is the top level https://www.theguardian.com/food/series/how-to-cook-the-perfect----
461 recipes.
There must be a book! And there is... there are two.
https://www.amazon.co.uk/Perfect-Essential-Recipes-Every-Repertoire/dp/1905490836/
https://www.amazon.co.uk/Perfect-Too-Essential-Recipes-Repertoire/dp/0241003121/
I've already ordered the Grigson, but have added these to my Wish List https://www.amazon.co.uk/hz/wishlist/ls/3GD2QRMGLDYQ9?ref_=wl_share I'm reasonably good at buying the most recent things on there... obviously not true of the books I added a decade ago.