This is another excellent pocket reference guide. It compliments 'Taking statements', but it a little more meaty with regards to legislation. The A6-sized guide is easy to carry around or keep in your glovebox. It covers the arrest and what evidence or proof is needed for each aspect, to put together the strongest evidential case. New editions are issued to keep up to date with legislation.
It explains the specific legislation that applies, terms used, usual methods of proving these points, supporting evidence and exemptions. Highly recommended.