But he will need an angrier tone than he found for the expenses scandal, while avoiding the clunking class war that helped Labour lose a by-election last year.

• 但是布朗还是需要比现在“报销门”的理由上有更加站得住的说辞，同时要避免出现“阶级战争”，后者导致去年递补选举时的失败。