'We must never forget them' - Tributes paid to victims of London Bombings 12 years on

Today marks 12 years since four suicide bombers attacked London and killed 52 people.

Four devices were detonated on that day, three on the Underground and one on a double decker bus.

More than 700 people were injured in the bombings, which have become known as 7/7.

On the anniversary of the atrocity, many have been paying tribute to the victims on Twitter.

See the reaction below