Two people have been arrested in connection with an attack which left a 51-year-old man with a fractured eye socket and jaw.
Following an appeal on Wednesday using CCTV images two men, both aged 30 and from Aylesbury, were arrested on suspicion of GBH and are in custody.
The assault took place at about 1.30am on June 16.
The victim was walking in the subway underpass in Cambridge Street when he was attacked from behind by two men.
They pushed him to the floor and kicked him in the head before running away.
He required hospital treatment for a fractured right eye socket and fractured jaw.