Possible Clues:

• Pub drink could make you stagger and be ill, we hear
• Beer makes you stagger and feel ill, so we're told
• Singing Queen knocked back English drink
• Said to feel giddy and be indisposed after drink
• The RA in CAMRA
• Extraordinarily pleasurable pubs - with this?
• Cask-conditioned beer served traditionally
• Objective of campaign - note, more than half the battle is over
• On which all are drunk, at rear of lounge?
• CAMRA interest