Possible Clues:

• With 39-Across and 49-Across, rule broken by the three theme entries' first and last two letters
• Even looking up your last letter, it's always the exact opposite
• "___ Mind the Bollocks, Here's the Sex Pistols"
• With 69-Across, at absolutely no point
• 'Not gonna happen'
• Word repeated in both James Bond and Justin Bieber film titles
• Royal Navy upset about female entry? Not at all
• Alternative for now
• We may use it twice when shopping? No way!
• When Peter Pan grew up