'sculpture Frink'. (Elisabeth Frink's surname/ signature in her own handwriting alone on right of screen) in opening credits.
Over the end credits a Government helicopter continues to pursue the speedboat with Simon and Joan on board taking evasive action, before an inconclusive fade.
The credit "JOSEPH LOSEY director", unlike the others, recedes and vanishes.
Only in end credits: "Filmed in Hammerscope".