General view of nuclear submarine HMS Churchill ready for launching. Shots of crew members on board submarine, pan to show conning tower. M/S of conning tower with flag.
Various shots of Mrs Christopher Soames - Mary Churchill, daughter of Winston Churchill - receiving bouquet and walking towards launching dais. M/S of workers knocking away metal supports. M/S of launching bottle. General view as the bottle swings down and hits the sub and the sub moves off down slipway. M/S of crew members on board sub, zoom out to show sub on its way to fitting shed.