Lord Cullen led the public inquiry into the Dunblane tragedy
One of the country's most senior retired judges has been knighted by the Queen in a ceremony in Edinburgh.
Lord Cullen, who led the public inquiries into the Piper Alpha and Dunblane tragedies, was installed as a Knight of the Thistle.
East Lothian Lord Lieutenant Sir Garth Morrison also received the honour, one of the highest for public service.
The Duke of Edinburgh also attended the service, on Wednesday, at the capital's St Giles' Cathedral.
The colourful ceremony began with a fanfare by Her Majesty's Household
Trumpeters in Scotland to mark the arrival of the Royal guests.
The Queen, the Duke of Edinburgh and the Princess Royal joined a procession through the Cathedral leading to the Thistle Chapel - a small chapel founded in 1911 for such ceremonies.
The Royal party, all wearing robes of the Order of the Thistle, was joined in
the chapel by a handful of distinguished guests, including Lord Robertson and Lord Steel.
The Queen spoke briefly, installing Lord Cullen and Sir Garth as Knights of the "most ancient and most noble Order of the Thistle".
The Queen attended the service with the Duke of Edinburgh
Both men pledged to be "loyal and true" to the Queen and to "maintain the
honour and dignity" of the Order.
That part of the ceremony was held in private in the chapel, but was broadcast over loudspeakers to the hundreds of invited guests in the Cathedral.
Lord Cullen led the five-judge tribunal which heard the failed appeal of the man convicted of the 1988 Lockerbie bombing, Abdelbaset Ali Mohmed Al Megrahi, in 2002.
He also chaired the inquiry into the 1999 Paddington train crash which claimed 31 lives.
Sir Garth, a former chairman of Lothian Primary Care NHS Trust, also has a long-standing connection with the scout movement, including an eight-year spell as chief scout of the UK.
Both men were appointed on St Andrew's Day last November.
First Minister Alex Salmond also attended the service.