Adder was flight tested in the rear-turret position of the Avro Lancaster III SW342, the aircraft also having been previously modified and used for icing trials of the Mamba by Armstrong Siddeley's Flight Test Department at Bitteswell.
One such store run by "High Post Grain Silos" leased eighteen unused aircraft hangars at the former Bitteswell airfield and filled them with over 250,000 tonnes of feed wheat.