The attacks caused the biggest peacetime loss of life in Britain since the Second World War.
Beverli Rhodes, 46, was on one of the trains when a bomb exploded. She was thrown against a metal pole and suffered brain damage. She says she's still haunted by the bombings.
"I [still] won't go on the underground," she said.
"It's amazing that it was two years ago," John Salding, 63, whose girlfriend was amongst those killed, said.
"My memories are all so fresh."