Party leaders have clashed at a prime minister's questions once again dominated by public spending.
Both Lib Dem leader Nick Clegg and Conservative leader Mr Cameron attacked Mr Brown on Labour's plans for future cuts. Cameron said spending on equipment and building for the London Olympics will halve by 2012.
Brown accepted capital investment will fall after next April, but said it had increased in recent years to prepare for the London games.
David Wilby reports for Today in Parliament on 24 June.