No. 15—‛ Thames at War'. Arranged and directed by Marjorie Banks. Bob Trout visits the River Thames. Listeners hear of the great convoys which the sea and river pilots bring safely to the Port of London, of the paddle-boats that went to Dunkirk, and of people who help to keep this great waterway safe. Recording of a programme broadcast earlier today to the United States, in collaboration with the Columbia Broadcasting System of America