(CNN) A British Transport Police officer who was seriously injured in the terror attack at London Bridge has been hailed for his "outstanding" bravery.

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Armed only with just a baton, the unnamed officer tackled the attackers and suffered injuries to his head, face and leg.

Assailants struck the heart of London on Saturday night. The attackers drove a van into pedestrians on London Bridge before leaping out and launching a stabbing spree at nearby Borough Market.

Seven people were killed and another 48 wounded in Saturday's attack, which unfolded in eight minutes. The three attackers were shot dead by police.

'Enormous courage'

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