I bought this book primarily as I wanted something I could slip in my shoulder pouch when I go out bird-watching. As with all DK books it is nicely illustrated and covered a far wider range of insects that I had ever anticipated. However, the various families of insects are dealt with altogether and whilst this may be satisfactory when it comes to identifying wasps, not all the UK species of the dragonflies were covered. This was a disappointment for me. I would also have to add that whilst a tremendous amount of information is crammed on each page, the writing is very small and sometimes difficult to read.
Given the vast number of insects, this book offers a very good overview and for the size, I doubt if it could be improved. However, since it is too generic, I am not too sure that this is of much benefit to identify exact species. It seems to fall between two stools insofar that it affords quite a useful range of information whereas if you have a particular interest in beetles, spiders or wasps, it is far from comprehensive and a more specialist book on each genus would then be a far better option. As in introduction, I thinks this get 10/10 but probably only 6/10 as a practical field guide. All in all, an interesting and sometimes fascinating book.