§ Mr. Llew Smith
To ask the Secretary of State for Defence what remediation and post-operational monitoring has taken place at the British overseas chemical weapons test sites at(a) Rawalpindi, Wellesley barracks, Cannanore Porkal and Kumbla, India, (b) Sorbo Plain Near Sapele, Nigeria and (c) Pualo Tenggol, Dungun, Malaysia. 
§ Dr. Reid
We are unable to find any records that document remediation work of post-operational monitoring at the sites listed other than for Obanokoro where it is stated that all efforts were made to retrieve any unexploded munitions. The information we do have suggests that usage of these sites was relatively small scale and would not have been expected to leave any traces.