This is a great book. If you are planning on setting up a workers’ coop in the UK, this is definitely the first book you should pick up. And it’s free. You can download it as a PDF from Seeds for Change, although I bought the spiral-bound version from AK Press (the excellent Scottish/Californian workers’ coop), and I think I prefer it in that format. It is the sort of book you could see lying around a new workers’ coop, getting dog-eared from frequent use.
Many of the books I have reviewed here are aimed at US cooperatives, and much of the advice for new coops would be the same anywhere, but the legal side of setting up a worker-owned business is very different from place to place, and so the most important chapter for UK residents would definitely be Chapter 8: Choosing your legal form, where the authors go over the different kinds of business forms open to coops in the UK (e.g. company limited by guarantee; co-operative society; limited liability partnership, etc.).