Two minutes of national silence have been held in honour of the victims of the London bombings on this day last year. Commemorations were observed in each of the four locations where young Islamic extremists set off their explosive devices, killing dozens and injuring hundreds.
Ceremonies have been kept as low-key as possible out of respect for the bereaved families. Prime Minister Tony Blair has been marking the occasion with emergency services.
The Queen has attended a service at St Giles cathedral in Edinburgh. Authorities decided to keep underground trains running today, partly to send a message that London remains a normal city despite the trauma of what has become known simply as 7-7.