Queen Elizabeth hosts first in-person event since COVID-19, meeting Canada's Prime Minister Justin Trudeau

Queen Elizabeth has hosted her first in-person event since catching COVID-19, meeting with Canada's Prime Minister Justin Trudeau at Windsor Castle.

The monarch, 95, didn't use her walking stick for the engagement inside the Oak Room and appeared in fine form, smiling throughout.

Her Majesty made a show of support to the people of Ukraine with a large display of blue and yellow flowers featuring prominently on the table between the pair.

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Trudeau said the Queen was "insightful" as ever when he met her on Monday, adding that she was very interested in what was going on with regard to Russia.

"I can tell you in my conversation with her this morning she was as insightful and perspicacious as ever, very interested in what's going on," he told a news conference in London.

"I was able to talk about the situations we are facing and draw on her long experience from having seen so much over these past decades."

Canada's PM is in Britain for talks on the war in Ukraine with Boris Johnson and Dutch Prime Minister Mark Rutte.

Last week it emerged the Queen had made a "generous donation" to support people fleeing the conflict in Ukraine.

Members of her family — lead by Prince Charles — have spoken publicly in condemnation of the war in recent weeks.

"I must say my wife and I have been deeply moved by everything we have heard today during our visit and above all by the extraordinary bravery, generosity and fortitude of the Ukrainian community in the face of such truly terrible aggression," the Prince of Wales said during a visit to the Ukrainian Catholic Cathedral in London last week.

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His comments followed those of the Duke and Duchess of Cambridge who said the stood "with the President and all of Ukraine's people".

Prince Harry and Meghan, too, issued a statement encouraging the global community to take a stand against the aggression.

The Queen and Trudeau have met each other on countless occasions with Canada being Her Majesty's most frequent overseas destination.

She has visited more than 20 times.

The Queen was without her walking stick that she has been using of late after suffering from a bout of ill-health and mobility issues.

She was confirmed to have COVID-19 on Sunday February 20 with Buckingham Palace announcing Her Majesty was "experiencing mild cold-like symptoms".

The monarch made a slow return to regular life last week when she fronted two virtual audiences from Windsor Castle.

But she had cancelled some engagements the week before due to cold-like symptoms from the virus.

The Queen is expected to attend, in person, the Commonwealth Day service at Westminster Abbey on March 14 and a service of thanksgiving for the late Duke of Edinburgh, also at the Abbey, on March 29.

Yesterday it was revealed the Queen will leave Buckingham Palace for good and make a permanent move to Windsor Castle.

She has been based at the castle since March 2020 and will only return to London for special occasions, reports The Times.

Renovations currently underway at Buckingham Palace are expected to continue for another five years, contributing to the Queen's decision to relocate permanently.

Her Majesty has come to prefer life at the castle, located in Berkshire, where she was forced to isolate with the Duke of Edinburgh at the start of the coronavirus pandemic.

Sources told the publication the Queen intends to "predominantly" undertake future engagements at Windsor, to reduce her travel after being ordered to rest by doctors in October.