Big Local provides local areas with funding to support resident-led solutions to create lasting change. Starting in 2010, The National Lottery Community Fund (then called The Big Lottery Fund), identified areas that have since been described as ‘left-behind’ – areas that had been previously overlooked for funding and investment. In choosing the areas, consideration was also given to geographical spread across England and factors such as deprivation levels and resident popultations. By 2012, 150 areas had been chosen and allocated £1m each of Big Local funding. This paper reports on research looking at boundaries in Big Local including fieldwork in three Big Local areas where issues relating to boundaries have arisen.