He arrives on a deal that will see him spend the rest of the calendar year at the club.
Smith, who mainly operates as a wide forward, scored 7 times in 22 appearances for Albion’s under-18’s last season, for whom he was teammates with Reds boss Adam Hinshelwood’s son, Jack.
Originally from Worthing, he’s already represented the Reds at under-14’s prior to be picked up by the Seagulls.
He also excelled in athletics growing up, winning an ESAA gold medal in the 200m aged 14, recording a time of 22.56s, the fastest in the UK for his age group at the time.
On the arrival of Smith, Hinshelwood said: “Bailey is a Worthing lad and will bring a lot of pace and power to our front line”. “He gives us options is in attack because he can play wide but also down the middle – he’ll add some real competition for places, which is what we’re striving for – I’m excited to work with him”.