London hit by four bomb attempts, two weeks on
By Philippe Naughton, Times Online

Exactly two weeks after four suicide bombers wreaked havoc in the London rush hour, large parts of the capital were again brought to a standstill today by apparent copycat attacks on three Tube trains and a bus.
Emergency services were called out to incidents at three stations, including a reported nail bomb attack at Warren Street station.
Warren Street, Shepherd's Bush and Oval stations were evacuated at 12.30pm. An explosion was also reported on a No 26 bus at Hackney in East London, blowing out the windows but not causing any injuries.
Sir Ian Blair, the Metropolitan Police Commissioner, has confirmed that one person was injured in attacks that were "close to simultaneous".

Timesonline