Possible Clues:

• Convert code into normal language
• Understand pressure on the woman after start of festive month
• Picture he'd held back requires years almost to make sense of
• Read with difficulty
• Crack (code)
• Succeed in establishing meaning of price he'd negotiated
• Make out deer round Channel Islands pub
• Crack developed rich and deep
• Understand, after 12th month, Apple product no longer on insurance, essentially
• Make out meaning of price he'd fabricated