Possible Clues:

• He won't be late, travelling by rail and road after the end of June
• Proverbial worm catcher
• Worm-catching satellite
• It gets the worm
• Might be in the 23 down, but not of late
• 'The ..... .... catches the worm'
• Lark?
• Possible lark ending in coarse ribaldry, -unfortunately
• One has a worm, but not of late
• 'The . . . . . . . . . catches the worm '