The 2007 UK Radioactive Waste Inventory lists the volume of intermediate and low level radioactive waste that is expected, as of 1 April 2007, to arise in future years at the Atomic Weapons Establishment. This document is available from the Nuclear Decommissioning Authority website:
It includes forecast quantities for the period 2010 to 2014. It states that the volume of intermediate level waste is forecast to be 1,040 cubic metres and the volume of low level waste is forecast to be 6,200 cubic metres.
The forecast for the three years from 2009 is not held separately and could be provided only at disproportionate cost.