The IRA planned to knock out the power supply to the south east of England in the final years of its bombing campaign, a former insider has claimed.
Details are revealed in the final episode of the BBC series Spotlight on the Troubles: A Secret History.
Insiders describe a battle of wits between the IRA and British intelligence.
When the British Government refused to admit Sinn Féin to peace talks in the mid-1990s, Canary Wharf was bombed.
What is atrocious is that many of the people that carried out the IRA bombing campaign are free and even living in England, but if they had carried out this attack, it would've been devastating for the country.
Decades after the attacks on London, there is still the so called "ring of steel" around London consisting of CCTV and guards, with police carrying out ad hoc checks.
The first time I ever saw a gun was when a load of armed police carried out a surprise stop and search operation on Blackfriars Bridge after one of the attacks. They closed the bridge off and searched all cars and people going over the bridge with machine guns at the ready. A new age had started...