Possible Clues:

• Stubborn old boy expected to hold rodent
• Make a speech about British — some of the French hard to persuade
• Won't change opinion at our bed
• Convert a doubter not easily swayed
• ... this, a doubter in a frenzy
• Implacable Bond, with one outer failing on the surface
• Hard-hearted alumnus expected to harbour traitor
• Engineer red about being so stubborn
• Out getting bread mix, deaf to all advice
• Unwilling to budge