Possible Clues:

• Sons leave Los Angeles to make a point concerning defamation
• Swear going in and out of All Soul's College
• Cricket side into beer to declare
• 'Claim everything - the East, for instance (6)'
• Offer without proof
• Declare to be true
• Declare or accuse without proof
• A school loses business claim
• Maintain alcoholic drink is about litre, say
• Aver