Conservative MP James Cleverly has paid an emotional tribute to his friend Pc Keith Palmer, telling the Commons he was a "strong, professional public servant".
The Braintree MP said it was a "delight" to meet Pc Palmer again when he was elected to Parliament, and called for him to receive a "posthumous recognition".
Mr Cleverly said his "heart went out" to all those injured.
On Wednesday Mr Cleverly revealed that he served with Pc Palmer in the Royal Artillery.
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Responding to Mr Cleverly, the Prime Minister said: "I thank him for the obvious, not just compassion, but passion with which he has spoken about an individual he knew, and he bears witness to the tremendous public service that Keith Palmer had given this country in so many ways.
"Having served in our armed forces and then come here to this place and paid the ultimate sacrifice here at the heart of our democracy, I can assure (Mr Cleverly) that the issue that he's raised is of course one that will be considered in due course."
All those arrested in connection with the Westminster attack have now been released by police.
Tony Davis was the first civilian to reach Pc Palmer after he was stabbed during the Westminster attack.
Defiant Londoners put on a show of solidarity for the victims of the Westminster terror attack at a vigil in their honour.