Adult Social Care Glossary, v 0.6

Other people should act in your 'best interests' if you are unable to make a particular decision for yourself (for example, about your health or your finances). The law does not define what 'best interests' might be, but gives a list of things that the people around you must consider when they are deciding what is best for you. These include your wishes, feelings and beliefs, the views of your close family and friends on what you would want, and all your personal circumstances.