The Queen has carried out her first official engagements since she faced a COVID scare.
The 95-year-old monarch held virtual audiences from Windsor Castle on Tuesday.
She was pictured greeting the Estonian ambassador, who spoke to the monarch via video-link from Buckingham Palace.
She also received the Spanish ambassador over video-link.
The Queen could be seen on screen as she spoke by video link with the Estonian ambassador to the UK, Viljar Lubi, who had travelled to Buckingham Palace.
The monarch was seated in her Oak Room sitting room at Windsor Castle.
Queen’s Platinum Jubilee: Gun salutes mark official start of 70th anniversary celebrations
Platinum Jubilee: Queen pictured at work in image released for historic 70th anniversary
Prince Charles ‘deeply conscious of the honour’ for ‘darling’ wife to be Queen Camilla
Mr Lubi presented his credentials and his predecessor’s letters of recall to the Queen. He was accompanied by Maarja Junti, who was also received by the monarch.
Spanish ambassador José Pascual Marco Martínez also presented his letters of credence. He was accompanied by his wife, Geraldine Dufort.
First engagement since Prince Charles tested positive
It comes after Prince Charles tested positive for the virus last Thursday, having met with the Queen earlier that week.
At the time Buckingham Palace said the Queen was not displaying any symptoms of the virus.
However, the palace refused to confirm whether the Queen had tested positive for the virus, citing privacy.
The monarch will have taken daily lateral flow tests over the last seven days in keeping with current guidelines.
Prince Charles and Camilla are fully vaccinated
Both Prince Charles, 73, and Camilla, 74, were fully vaccinated and had also had a booster shot.
Charles previously tested positive for the virus in March 2020.
He suffered mild symptoms.
His son Prince William, the Duke of Cambridge, tested positive shortly afterwards.