Here are the latest updates:
• Corbyn rejects national anthem criticism as 'tittle-tattle'
• Apparent 'snub' overshadows maiden speech
• The Labour leader will make first PMQs appearance at midday
• Six ways Corbyn could revolutionise PMQs for good
• Tory MP defends Corbyn for staying silent at service
• Analysis: 10 challenges he faces in next 100 days
• Tory tax credit cuts voted through despite concerns
• BBC cameraman in 'fracas' with Corbyn driver
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Today's session in the Commons was one of the most hotly-anticipated for years, after the new Labour chief promised to pose questions crowdsourced from party supporters.
It came in the wake of Mr Corbyn's first major speech as leader at the TUC conference, where he challenged Mr Cameron and George Osborne for trying to "socially cleanse" Britain.
Welfare was expected to be one of the key themes at the PMQs debate. Mr Corbyn said on Tuesday that while the Tories say Labour are "deficit deniers", "what they are is poverty deniers".
Mr Cameron has just returned from a whistle-stop tour of Lebanon and Jordan, where he wanted to "see for himself the needs of Syrian refugees". The growing plight of those fleeing conflict for safety in Europe was the key theme from last week's PMQs - Harriet Harman's last - and was expected to feature prominently again on Wednesday.
