Named after a new development beside the Thames at Barking.
'Riverside' refers to its place next to the River Thames; at first the area was to be called Barking Reach. It is being built on former tidal marshland, later the site of Barking Power Station, which closed in 1981. Barking itself is an ancient parish name, found in the Domesday Book of 1086. The station opened in 2022.