Possible Clues:

• Archbishop given porridge not a moment too soon
• None too soon
• Issue returned by boy at the last moment
• Without a minute to spare
• Archbishop Welby faces issue, returning with seconds to spare
• Like judge, topping current sentence at the last minute?
• At the last possible moment
• Boy appearing on stage at the last moment
• Two chaps starting experimental factory system
• I met Justin (anag.)