British PM Boris Johnson says Queen Elizabeth 'on very good form'

The Queen has been advised to rest for at least the next two weeks. Photo / Getty Images

British Prime Minister Boris Johnson says the Queen was "on very good form" during their weekly conversation earlier this week.

His comment comes a day after Buckingham Palace said the 95-year-old monarch had been told to rest by doctors for another two weeks.

"I spoke to Her Majesty as I do every week as part of my job and she was on very good form," Johnson told ITV News on the sidelines of the Group of 20 summit in Rome on Saturday local time.

As prime minister, Johnson has a weekly audience with the Queen. The most recent one took place virtually on Wednesday.

"She has been told by her doctors that she has got to rest and I think we have got to respect that and understand that and everybody wishes her all the very best," Johnson said.

Last week, the Queen underwent medical tests and spent a night at London's King Edward VII's Hospital, her first such stay in eight years.

The Queen has continued to work since then and will press on with desk-based duties.

During her rest period, she will miss attending the UN climate summit in Glasgow, Scotland, which commences on Sunday. However, she has recorded a message that will be relayed to attendees.

She will also skip the November 13 Festival of Remembrance at the Royal Albert Hall in London, an event meant to honour the British and Commonwealth men and women who have fought wars, disasters and pandemics to protect and defend the nation.

However, the palace said it is the Queen's "firm intention" to be present for a Remembrance Sunday ceremony in central London on November 14.

Britain's longest-lived and longest-reigning monarch, Elizabeth is due to celebrate her Platinum Jubilee — 70 years on the throne — next year.