EPPING St Margarets Hospital, , (Mon-Fri and Suns), Ongar Road, Epping High Street, Wake Arms, Church Hill, Loughton, LOUGHTON STATION (Mon-Fri and Suns) Alderton Hill, Roding Road, Valley Hill, BUCKHURST HILL STN (Mon-Fri peaks)
NEW OPO ROUTE: Part replacement of Route 20 (MF and Sun) which was withdrawn on these days.

EPPING St Margarets Hospital, -, LOUGHTON STATION - BUCKHURST HILL STN (Mon-Fri peaks)
Saturday Route introduced with crew operation. This partly replaced former 20.

14.06.69
Route replaced by revised Route 20A.