On July the 7th, 2005, four bombs changed Britain forever.

I see him put his hand in the bag and then there was a brilliantly white, bright flash.

I'm Dominic Hashani. After two decades reporting on terrorism, I'm exploring how 7-7 and the attacks since changed lives,

tested leaders and reshaped the threat we face.

It's not that it woke us up to the nature of the threat, but I think it woke us up to the fact

that obviously what we had in place was not adequate.

The State of Terror. Listen on BBC Sounds.

BBC Sounds, music, radio, podcasts.

You're listening to Sunday's episode of The Archers from BBC Radio 4.

Music I can hardly believe it.

No, it's horrible to think anyone could do that, Tracy.

Poor little thing.

Yeah, I know.

Poor tortoise. Never did no arm to a soul.

Well, she's out of danger, though, thanks to Alastair. Even so,

Kenton? Yes, yes, I know. A cat? A little innocent cat? Have you reported it? Well, the police say

there's a limit to what they can do, not without more evidence. And you ain't got anything? No.

All they can do is take our statements. So you've got no idea who did it? No. Well, I can sort of guess, Jolene and me, but it's not going to get us anywhere.

What's his name?

Markey?

Yeah, Marky or one of his crew.

That's what we thought, yeah.

...