Southeastern operates a train from Canary Wharf to Chatham hourly. Tickets cost $17 - $24 and the journey takes 30 min. Alternatively, The Kings Ferry operates a bus from Canary Wharf to Chatham every 3 hours. Tickets cost $12 and the journey takes 55 min.
From Stratford International train to Chatham. 30 min £15. From Canary Wharf, Canada Square North bus to Gillingham, Jeffery Street (James Street). 55 min £8. From Canary Wharf DLR Station train to Lewisham then train to Chatham. 1 h 30 min £17. From Canary Wharf taxi to Chatham. 39 min £123. From Canary Wharf drive to Chatham. 39 min £5.