Possible Clues:

• Old meter adjusted to the limit
• Most remote
• Old chestnut about Frenchman is too much
• Farthest - to the highest degree
• One of those to meet in Mackenzie's work, perhaps
• From the brook at the end of it by the sound of it
• That's at the end about me at the end
• Meet Rex (anag.)
• Perhaps meeter about ten in the end
• Former soldiers carrying troop leader over the top