In her evidence Dr Walford agreed that it was or should have been known to all those involved with BPL in the second half of the 1970s that the demand for blood products was rising, that it was or should have been obvious that BPL was outdated and too small, and that significant investment was required in order to be able to meet the rising demand, and that the Government had determined that BPL should meet standards equivalent to those expected of commercial plants.