The Queen has honoured foreign affairs minister Tobias Ellwood who tried to resuscitate a policeman stabbed to death in the attack on parliament, the prime minister's office says.
Ellwood and security minister Ben Wallace, who helped coordinate the government's response to Wednesday's attack, were appointed to the Privy Council, which has advised the monarch since the Norman era and is comprised of senior politicians, judges and bishops.
Ellwood, a former captain in the British army, received widespread public attention when he was pictured with blood on his face and hands after joining unsuccessful attempts to revive PC Keith Palmer.
The constable was one of four people killed by Khalid Masood who ploughed a vehicle into pedestrians on Westminster Bridge and than ran through the gates of parliament armed with a knife.
The attacker was shot dead by armed police.
Islamic State claimed responsibility for the attack, although it was unclear what links, if any, Masood had with the militant group.
The attack was the deadliest in Britain since 2005, when 52 people were killed by Islamist suicide bombers on London's public transport system.
