The Queen in Northern Ireland 1977: IRA roadblocks
The Queen's Silver Jubilee vist to Northern Ireland in 1977 took place under very different circumstances to those that greet her on her Diamond Jubilee visit.
In 1977 security was so precarious that the Queen had to overnight at sea and take her first ever helicopter flight to get into Belfast for a series of tightly screened engagements.
As Peter Taylor recorded in an ITV documentary, the IRA set up a roadblock for five minutes within a few miles from the Queen.
Watch Peter Taylor's full report on the Queen's jubilee visits of 1977 and this year on Newsnight at 10.30pm on BBC Two on Tuesday 26 June 2011 then afterwards on the BBC iPlayer and Newsnight website.