Greater Anglia operates a train from Billericay to Brentwood 5 times a day. Tickets cost $4 - $6 and the journey takes 10 min. Alternatively, Arriva UK operates a bus from Billericay to Brentwood every 15 minutes. Tickets cost $5 - $8 and the journey takes 25 min.
From Billericay train to Brentwood. 10 min £3. From Billericay, Railway Station (B'ricay Rail Stn) line 9 bus to Brentwood, High Street (Halifax). 25 min £4. From Billericay taxi to Brentwood. 10 min £28. From Billericay drive to Brentwood. 10 min £1.