I think it's 16x64 but don't quote me on that!
Tender results as of today, 18th June 2021:
Route 55*, retained by Stagecoach London, existing LTs to be continue to be used
Route 56, retained by Stagecoach London, existing hybrid double deckers to be used
Route 322*, awarded to Abellio London from Battersea garage (currently Go-Ahead, Stockwell) with new short wheelbase EV buses
Route 350, retained by Abellio London from a new depot in Hayes with its existing single decker Enviro 200 MMCs
Route 397, retained by HCT Group, existing Enviro 200 MMCs to continue to be used
Route 433, retained by Abellio London with new dual door single decker EV buses to be used
Route W16, retained by HCT Group, existing Enviro 200 MMCs to continue to be used
School routes
Route 667, awarded to Stagecoach London from Barking garage (currently Go-Ahead, River Road) with existing diesel double deckers
Route 677, awarded to Go-Ahead London from River Road garage (currently Stagecoach, Barking) with existing diesel double deckers
Footnotes
Routes marked with an asterisk* are to be awarded on default, new 7 year contracts regardless of performance. This will be standard practice generally so to speak from now on.
Routes 667 and 677 will change operators on the 12th March 2022, with route 322 changing on the 30th April 2022.
Route 55 will have its PVR reduced by 6 buses; the expectation is no route modifications but an overall running time and frequency reduction on all days of the week.
Source: http://www.lots.org.uk/