UK - Terror plot suspects bugged by MI5

More proof emerging.

During months of careful work, the specialists are understood to have managed to get inside the gang's bomb-making factory - giving final confirmation that the plotters were indeed planning mass murder.

In earlier, unrelated, anti-terrorist operations, MI5 specialists had managed to remove explosive compounds from one terror cell and replace it with inert material.

But in this case MI5 chiefs decided this was not an option - making it even more critical that the plotters were watched 24 hours a day.

Intelligence sources last night indicated that some of the bomb-making chemicals and equipment being used by the gang had been seen 'in situ' but could not be removed or replaced without raising suspicion.