Which British national museum holds Over The Top and banches at five locations in England?
Over the Top (painting): Over The Top is a 1918 oil-on-canvas painting by John Nash. Over the Top (painting):  It depicts a counter-attack on Welsh Ridge in northern France on 30 December 1917, during the First World War. Imperial War Museum: Imperial War Museums (IWM) is a British national museum organisation with branches at five locations in England, three of which are in London.
Imperial War Museum