From Thamesmead Town Centre line 177 bus to Plumstead High St Police Stn. 18 min £2. From Barking drive to North Woolwich, Woolwich Ferry North Pier, Woolwich Ferry to Woolwich Ferry South Pier, then drive to Plumstead. 27 min £5. From Barking Uber to Plumstead. 21 min £19. From Barking walk to Plumstead. 1 h 51 min.