Although the price may seem a little steep for a book which is half the size as Dijkstra & Lewingtons Guide to the Dragonflies of Britain and Europe (and costs almost as much), this is still the book that I recommend to anyone who is just starting to take an interest in British Dragonflies.
All of the regular species, and most of the vagrants, that have been recorded in Britain are covered in the revised edition. (If you are thinking of buying a secondhand copy the 1st edition does not include the Small Red-eyed Damselfly, which was first recorded in Britain in 1999 and is now found at sites all over south-east England - and is still spreading).
Although the illustrations are the same as in the European Guide, each species is covered in slightly more detail with notes on 'Status & conservation' and 'Ecology and behaviour' included. Flight periods quoted refer to those recorded in Britain, rather than a broader period covering 'northern Europe' (or the whole of Europe), so give a more accurate indication of when each species is likely to be seen. The maps, although often slightly out of date because many species are gradually spreading northwards, are also more detailed as Britain is four times the size as in the European guide!
The book also includes brief descriptions of the life cycle of dragonflies, a key to the identification of larve, and a county by county round up of sites to visit (including OS grid references).