The Princess Royal has awarded the George Cross to an Army bomb disposal officer after the Queen withdrew owing to "continuing discomfort" in her back.
The Princess Royal stood in for the Queen at the investiture
Captain Peter Norton was among those who received awards at the Buckingham Palace investiture, along with Rolf Harris and actor Rudolph Walker.
Capt Norton lost a leg and part of an arm in a blast near Baghdad in July.
The Queen, who is 80, was forced to cancel several engagements last week because of her back.
She will travel to Crawley in West Sussex on Friday but Prince Philip will carry out some duties on the visit by himself.
The palace said the Queen would have a busy itinerary in the morning, but she would leave before a planned lunch with pupils at a community college and a tour of a sheltered housing scheme.
A palace spokeswoman said: "At this stage there are no plans to cancel engagements next week; we are reviewing things on a daily basis."
The Queen strained a muscle while holidaying at Balmoral during the summer.
The Duke of Edinburgh stood in for his wife at the opening of Arsenal's new multimillion-pound Emirates Stadium last week.
He told staff and players that she was "very disappointed" not to be there.
She has been told to scale down her schedule by doctors after returning from her recent trip to the Baltic states of Lithuania, Latvia and Estonia.
Capt Norton is credited with saving seven lives by instructing troops as he lay wounded from a bomb blast.
The 43-year-old officer, from Gloucester, lost a leg in the blast near Baghdad in July, and later part of an arm.
But as he lay seriously injured he continued to tell his team where they could move - a further bomb was discovered 10m away and made safe.
The George Cross is the highest medal for bravery with the enemy not present.
Australian entertainer and artist Rolf Harris was made a CBE at the ceremony.
Eastenders star Rudolph Walker, who in 1972 became the first black actor to take the lead role in a major TV series - Love Thy Neighbour - was made an OBE.