' Churchill 's Toyshop ' operated out of nowhere at first in World War Two . Eventually it moved to a mansion in the 1930s to avoid bombing raids . The top - secret weapons laboratory tested some groundbreaking weapons . These included the human rocket launcher and a rocket - powered wheel .
'Churchill 's Toyshop ' operated out of London at first in World War Two . Eventually it moved to a mansion in the countryside to avoid air raids . The top-secret weapons lab developed some groundbreaking weapons . These included the human limpet mine and a rocket-powered wheel .