THE Queen Mother was last night "in remarkably good form" despite a broken collar bone.

Her grandson, the Prince of Wales, spoke to the 100-year-old Royal on the telephone before visiting her at Clarence House.

Along with others who have spoken to her or visited, the Prince delivered an up-beat verdict on Britain's oldest Royal.

With her left arm and shoulder in a sling, the Queen Mother is able to sit up in bed.

She has not been admitted to hospital and was treated at her London home, where she fell, by doctors who decided not to put the break in plaster.

The Queen Mother, who walks with the aid of two sticks, fell at Clarence House on Friday afternoon.

She tripped on the edge of a carpet as she entered her sitting room.

The page on duty was nearby and soon discovered the Queen Mother lying on the floor.

Steward and page William Tallon said: "She is a very resilient lady and a wonderful example to us all."

The Queen Mother's private secretary, Sir Alastair Aird, described her as "very chirpy".

He said: "The page on duty found Her Majesty very soon after she fell - probably in less than a minute. She had to be helped, and the sister and doctor were called."

Dr Richard Thompson, the Queen's Physician and Head of the Medical Household, based at London's St Thomas's Hospital, was summoned.

The fall comes after the Queen Mother stumbled last Tuesday evening while getting into her Daimler limousine.

On that occasion, she tripped on her long evening gown after attending a Garden Society annual dinner in London.

Witnesses said she appeared to hit her head on the car but Clarence House said she was unhurt.

The Queen Mother, who turned 100 on August 4, walks with difficulty after two hip replacement operations.

She will need to rest while the collar bone mends.

She was due to visit the Field of Remembrance at St Margaret's Churchyard, Westminster, on Thursday, ahead of Sunday's Remembrance Service at the Cenotaph, Whitehall, to pay tribute to wartime dead.

"Her Majesty is reasonably comfortable and has cancelled her engagements for the time being," said a Clarence House spokeswoman