The East London Transit was built in 2010 with section of bus lane and improved bus infrastructure,
serving the Barking Riverside area with two routes, namly EL1 and EL2.
Borismaster is introduced in 2017 on EL1, EL2 and the new route EL3,
displacing the Go Ahead B9 to X26.
ELS now being the only routes served by Borismaster outside Central London.