planning laws - both local and national governments have regulations in place affecting regeneration, some impacting degree of development that can take place
green belts is undeveloped land surrounding urban settlements that prevent outward spread of these settlements making them more densely populated - green belts are usually farmland but have been instances where authorities have lifted restrictions and allowed developments to take place
for example, decision to build new homes on green belt land in Maghull in Liverpool was unpopular among locals