The tribute came on Sunday as police confirmed a 24-year-old man and a 23-year-old woman had been charged in connection with the collision in Greenfield Road.
Jamie Fountain, of Fir Tree Close, Flitwick, was charged with causing death by careless driving and causing death by careless driving while over the legal limit for alcohol and drugs.
He was also charged with two counts of causing serious injury by careless driving in relation to two other boys who were injured.
Fountain was further charged with failing to stop at the scene of an accident, failing to report an accident and conspiracy to pervert the course of justice.