Three heritage organisations have joined forces to call upon the government to help prevent cuts to historic environment services by encouraging local authorities to maintain staff levels.

Research carried out by English Heritage (EH), the Institute of Historic Building Conservation (IHBC) and the Association of Local Government Archaeological Officers revealed that such cuts could lead to a future crisis for heritage conservation. Despite a 20 per cent increase in staff levels between 2003 and 2006, the organisations claim that the 5 per cent decrease made between 2006 and 2008 could eventually threaten historic parks, world heritage sites and even regeneration projects.

Steven Bee, EH's director of planning and development, said: "Specialist archaeology and conservation staff are the front line of heritage protection in this country and local authorities must recognise this. "A future lack of such staff would create pressure and expense for householders applying for consent, and could block the regeneration and renewal projects vital for economic recovery."

IHBC chair Dave Chetwyn added: "It is crucial that local authorities maintain their full commitment to delivering sustainable regeneration and economic development during the credit crisis and recession. "We are therefore especially concerned over the loss of design and heritage specialists who play such a crucial role in delivering effective services and development for the long-term."