When London Buses was divided into 11 subsidiaries operation of route 38 was taken over by London Forest. London Forest was wound up in 1991; the route then became a joint operation between Leaside Buses and East London, before being transferred to Leaside Buses.
When London Buses was divided into 11 subsidiaries, route 38's operation was taken over by London Forest. London Forest was dissolved in 1991; the route then became a joint venture between Leaside Buses and East London before being transferred to Leaside Buses.