Transport for London (TfL) has placed contracts for seven routes, totalling 184 double-decker buses, to start between August and December.
Of these, 117 will new new Euro 6 hybrids, the rest existing double-deckers (of which 22 are existing Euro 5 diesels).
Also, 10 Euro 5 hybrids operated by London General will be upgraded to Euro 6 hybrids.
The routes are 5, 6, 15, 18, 22, 98 and 115.
