A failed plot to detonate two car bombs in central London appears to have been inspired by al-Qaeda and intended as a message to the new British government of Gordon Brown, analysts said today. Police defused two bombs left in cars that were found in London’s entertainment district early Friday morning, two days after Brown succeeded Tony Blair as prime minister. The plot appears “aimed at the new government”, said Dame Pauline Neville-Jones, former head of the government’s joint intelligence committee.