With existing planning obligations well and truly in the spotlight and open to review, we should take time to consider how easy it is to review a planning obligation. Within five years from the date of the obligation, it can only be reviewed by deed including all persons by whom and against whom it can be enforced. Changes on the title may make this impracticable so that this could defeat the intention of the advice. Beyond five years, the statutory application process is available and can overcome those practical problems. The Secretary of State could, however, improve the position by prescribing a shorter period. How have readers navigated their way around these issues?