Simon Harcourt-Smith remembers Queen Mary defusing a bomb during the last war. 'The Queen was smiling. There was something almost ecstatic in that smile, or was it the excitement of a little girl confronted by a riotous new toy that dealt appropriately with a stick of the enemy's mischief? Impossible to know ..." "Wasn't that ripping? " said the Queen.! Producer HALLAM TENNYSON