Contaminated blood 'cover-up' revealed in Cabinet papers unearthed by campaigner Jason Evans. Previously unseen Cabinet documents show senior ministers in the 1987 Conservative Government pursued a deliberate policy of not accepting any responsibility for allowing contaminated blood products to be given to haemophiliacs. The papers also show ministers tried to limit the Government's financial liability to victims - despite privately acknowledging it could not "refute convincingly" the allegation that it was at fault.