The IRA bombed the Grand Hotel in 1984
Lord Tebbit has said Labour should not have allowed Martin McGuinness to attend its conference in Brighton.
He said it was "inappropriate" for the Sinn Fein deputy leader to be in the town just weeks before the anniversary of the IRA bombing of the Grand Hotel.
Lord Tebbit was injured and his wife permanently disabled in the attack during the Tory conference in 1984.
Mr McGuinness attended a party organised by the Guardian newspaper at the Grand Hotel on Monday night.
Five people were killed in the Brighton bombing.
One of the best-remembered images of the night was that of Lord Tebbit, who had to be rescued from the rubble.
Asked whether Mr McGuinness should be participating in events in Brighton this week, Lord Tebbit replied: "I do not think it is appropriate that he is not in prison."
He went on: "I assumed he had gone there to have a look to see why the plan failed. I would imagine that he is curious.
"He has been made a minister in the government of part of the United Kingdom, by the Labour Party, by the Labour Government.
"They presumably love him and admire him."
Mr McGuinness has admitted being in the IRA and politicians in Britain and Ireland believe he was a leader of the paramilitary organisation.
On Tuesday morning he spoke at a conference fringe event.