The below link is to previously unseen recordings from the London emergency services on the 7th July when 4 bombs exploded in London, three on tube trains, one on a bus. Quite sobering I thought.
Incidentally, you will hear a reference to SO-13, about which you can find info HERE if you're interested.
Nice link, horrific event
Lt_Col WIZ, VC, MiD (Ret)
BTW, I think that footage comes from a programme being shown on BBC 1 at 9pm tonight if you want to see more.