Buckingham Palace is yet to confirm if the Queen will be in attendance at a service giving thanks to Prince Philip next week.
Members of the Royal Family will be in attendance, reports the Mirror, but there has been no word about whether the monarch is included.
The event is due to be held at Westminster Abbey on Tuesday, March 29.
There are fears Her Majesty could miss the event in honour of her husband of more than 70 years after recent bouts of bad health, reports the Mirror.
Prince Philip died last April, aged 99.
A statement read: “Members of the Royal Family will attend a Service of Thanksgiving for the life of HRH The Prince Philip, Duke of Edinburgh, at Westminster Abbey on Tuesday, 29th March.
“The Service will give thanks for The Duke of Edinburgh’s dedication to family, Nation and Commonwealth and recognise the importance of his legacy in creating opportunities for young people, promoting environmental stewardship and conservation, and supporting the Armed Forces.
The Service will in particular pay tribute to The Duke of Edinburgh’s contribution to public life and steadfast support for the over 700 charitable organisations with which His Royal Highness was associated throughout his life.”
The Duke of Edinburgh's Award is expected to feature prominently in next week's service, with a tribute to be given in the abbey by a recipient of the gold award.
Other guests include representatives from the Government, the Armed Forces and the Devolved Administrations as well as representatives of Overseas Territories, The Queen's Household, the clergy and other faiths.
The congregation will have more than 500 representatives of The Duke of Edinburgh’s patronages and charities.
The Queen missed the Commonwealth Day service already this month.
The decision to cancel her appearance was understood to be related to her comfort travelling the 26-mile journey from Windsor Castle to London, reports the Mirror.
Prince Harry will not be attendeing over his security fears.
In a statement Westminster Abbey said: "The Duke of Edinburgh had a long association with Westminster Abbey.
"On 20th November 1947, he married HRH Princess Elizabeth here (she became Queen in 1952), and they celebrated anniversaries including their Silver, Golden and Diamond Wedding anniversaries with services in the Abbey.
"He was also President and Chairman of the Westminster Abbey Trust, set up in 1973, to raise funds for the restoration of the exterior.
"For many years His Royal Highness attended the annual Opening of the Field of Remembrance."
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