DEFRA and its agencies do not hold information centrally for all National Nature Reserves (NNRs). For those NNRs in Cambridgeshire, Norfolk and Suffolk, reserve managers have estimated that approximately 78 hectares of reed bed are cut commercially with the reeds used for thatching, reed screens and specialist paper making. They also estimate approximately 115 hectares of these NNRs are managed by long term rotational cutting.