List of upcoming new buses for the London bus services
| Route | Operator | Bus type | Spec | PVR | Date |
| 34 | Arriva | Unknown | Hybrid | 22 | 9th November 2019 |
| 43 | Metroline | BYD Enviro400EV City | Electric | 37 | May 2019 |
| 54 | Stagecoach | Enviro400H MMC | Hybrid | 17 | 4th May 2019 |
| 75 | Stagecoach | Enviro400H MMC | Hybrid | 14 | 27th April 2019 |
| 90 | Metroline | B5LH/EvoSeti | Hybrid | Unknown | |
| 100 | Go-Ahead | BYD Enviro200EV | Electric | 9 | 21st September 2019 |
| 102 | Arriva | Unknown | Hybrid | 26 | 9th November 2019 |
| 134 | Metroline | OptareMetrodecker | Electric | 31 | August 2019 |
| 192 | Arriva | Unknown Single decker | Diesel | 15 | 9th November 2019 |
| 197 | Go-Ahead | Enviro400H MMC | Hybrid | 15 | 31st August 2019 |
| 208 | Go-Ahead | Enviro400H MMC | Hybrid | 16 | 27th July 2019 |
| 209 | Go-Ahead | Enviro200 MMC | Diesel | 10 | 17th August 2019 |
| 214 | Go-Ahead | BYD Enviro200EV | Electric | 19 | 17th August 2019 |
| 232 | Go-Ahead | Streetlite DF | Diesel | 16 | 3rd August 2019 |
| 272 | RATP-Dev | Unknown Single decker | Unknown | 8 | 25th May 2019 |
| 364 | Go-Ahead | Unknown Single decker | Diesel | 14 | 2nd November 2019 |
| 395 | RATP-Dev | Unknown Single decker | Unknown | 5 | 7th September 2019 |
| 440 | RATP-Dev | Enviro200 MMC | Diesel | 11 | 25th May 2019 |
| 497 | Stagecoach | Enviro200 MMC | Diesel | 2 | 24th August 2019 |
| E10 | Abellio | Enviro200 MMC | Diesel | 8 | 1st June 2019 |
| E11 | Abellio | Enviro200 MMC | Diesel | 5 | 25th May 2019 |
The new double decks are hybrids with some zero emission electric buses, while some of the new single deckers are Euro VI diesel.
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| Enviro400H MMC |
As for the New Routemaster spin-off such as the Wright SRM and Enviro400 City, it remains down to the private bus operators decision to purchase them for their own fleet; the same applies to bus companies outside of London. Recently CT Plus purchased a small batch for their new route 20 contract which they are operating now. Wrightbus still haven't featured the SRM product on their website but they still have the 3 door, two staircase hybrid New Routemaster page on their product list. The SRM is seen on the UK Volvo buses website for their B5LHC product.
Bus companies tend to order the bus type that is efficient and reliable for their operating performances, this is why TfL stated it’s down to the bus operators to decide on their purchase for the Enviro400 City and Wright SRM buses.
Metroline will be using 37 of the BYD Enviro400EV City buses for their London bus route 43 contract. They have chosen their own interior livery instead of the interior livery based on the New Routemaster bus. This could be a possibility for the Enviro400 City (bodywork) increase because Alexander Dennis is selling their new double deck battery electric product using the Enviro400 City bodywork.
To this day, I'm still expecting TfL to award new route contracts requiring operators to use zero emission battery electric buses. Perhaps TfL could do a mass purchase of the electric buses and lease them to the bus operating companies. This is the method TfL use with the New Routemaster buses as bus operators pay £1 per New Routemaster bus per year for lease rental.
Image attribution
By Martin arrand 1965 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=58416143
