People living near the west London self storage unit where anti-terror police seized half a ton of fertiliser say the news has shaken them.
Police search the storage unit in Hanwell where fertiliser was found
Officers found the ammonium nitrate - which can be used to make explosives -in a lock-up in Boston Road, Hanwell.
"It makes you want to move house," was the reaction of 84-year-old Maureen Naghten to the find, a few hundred yards from her home.
"I was ironing in the kitchen and it was my husband who heard it on the news."
She went on: "We couldn't believe it. It's scary to think what it could have been used for."
Across the road in the Red Lion pub, manager Graham Williams, 50, was enjoying a brisker than usual lunchtime trade, as curious passers-by popped in to find out the latest news.
He said: "It's a bit surreal seeing our road all over the television channels.
"I sleep above the pub but I didn't hear a thing when the police arrived this morning.
"You never think this sort of thing will happen next door, do you?
"We have a CCTV camera at the back of the pub which I suppose the police will want to check now."
A police van and several officers are standing guard in the sunshine outside the Access Storage Solutions building.
Nearby streets are cluttered with television satellite trucks, broadcasting news of the discovery to the world.
Down the road at the Horseshoe Cafe and Chinese restaurant Mr Ho, 36, the proprietor, says most of his customers are bemused to find Hanwell at the centre of such a major anti-terrorism operation.
"It makes you feel scared," he said. "In the wrong hands that stuff could cause a lot of damage.
"It is a relief the police found it first."