The Insurance Act 2015 ("the Act") is the first comprehensive statutory reform to the insurance law of the United Kingdom since the Marine Insurance Act 1906. It introduces comprehensive and in some cases fairly drastic reform of some of the core tenets of our insurance law, including: the insured's pre-contractual duty to the insurer, and remedies for its breach; the knowledge of the insured and the insurer for the purposes of the pre-contractual duty; the effect of insurance warranties and other terms tending to reduce the risk of loss; fraudulent claims, and (in all likelihood) damages for failure to pay an insurance claim in a reasonable time. This book is a thorough introduction to the Act, which focusses on the practical effect of the Act on the way in which the business of insurance is done. Of assistance not only to insurance lawyers and members of the judiciary, but also underwriters, claims handlers, brokers and buyers of non-consumer insurance policies, this book covers each of the core changes brought about by the Act, focussing primarily on their impact on non-consumer insurance and reinsurance. It also analyses (where appropriate) the particular ways in which the Act differs from existing law, by reference to the Marine Insurance Act 1906, and cases decided prior to 12 August 2016.