The Insurance Act 2015 is a UK Act about insurance contracts. Its contents provide a practical roadmap for businesses. It starts with main definitions, then moves to the duty of fair presentation, knowledge of the insured and insurer, remedies for breach, warranties and other terms, fraudulent claims, late payment of claims, good faith, contracting out and transparency requirements.
The Act also includes provisions about group insurance contracts and amendments linked to the Third Parties (Rights against Insurers) Act 2010. That means it is not just about disclosure at the start of a policy. It reaches into policy wording, claims handling and some linked rights issues as well.
For most businesses, the Act matters most in non-consumer insurance. The contents page distinguishes between consumer and non-consumer insurance contracts, so the first practical question is what type of policy relationship you are dealing with. If your business buys insurance for commercial activities, this Act is likely to be part of the legal framework around that contract.