A near-enough complete list - of course, the Electric Optare are likely to be further delayed due to the current climate

131 ADL Enviro 400MMCs
11139-11156 (YX68 UWN/O/P/R/S/T/U/V/W/Y/Z, UXA/B/C/D/E/F/G): Stagecoach Cumbria & North Lancashire (Morecambe)
11157 (YX68 UXH): Stagecoach Cumbria & North Lancashire (Carlisle)
11158 (YX68 UXJ): Stagecoach Cumbria & North Lancashire (Carlisle)
11161-11162 (SK19 EKD/E): Stagecoach North Scotland (Elgin)
11163-11175 (SK19 EKF/G/H/J/L/M/O/P/R/T/U/V, EKA): Stagecoach North Scotland (Macduff)
11176-11191 (YX19 OUA/B/C/D/E/F/G/H/J/K/L//N/O/P/S): Stagecoach East Scotland (Aberhill)
11192-11201 (YW19 VUO/P/R/S/T/U/V/X/Y): Stagecoach East Midlands (Hull)
11202-11215 (SK19 EVT/U/V/W/X/Y, EWA/B/C/D/E/F/G/H): Stagecoach Cumbria & North Lancashire (Morecambe)
11216-11232 (SN69 ZCU/V/X/Y/Z, ZDA/C/D/E/F/G/H/J/K/L/M/O): Stagecoach Midlands (Leamington)
11233-11253 (SN69 ZDP/R/S/T/U/V/W/X/Y/Z, ZFA/B/C/E/F/G/H/J/K/L/M): Stagecoach Oxfordshire (Witney)
11254-11271 (SN69 ZFO/P/R/S/T/U/V/W/X/Y/Z, ZGA/B/C/D/E/F/G): Stagecoach Manchester(Hyde Road)
11272/3 (SN69 ZGH/J): Stagecoach South (Chichester)
11274-11278 (SN69 ZNZ, ZPB/C/D/E): Stagecoach East Midlands (Mansfield)
11279-11280 (SN69 ZPF/G): Stagecoach Midlands (Bedford) on loan
11281-11300 (SN69 ZPJ/K/L/M/O/P/R/S/T/U/V): Stagecoach North East (Walkergate)
11501-11503 (SN69 ZRG/J/K): Stagecoach North East (Walkergate)

95 ADL Enviro 200MMC (11.8m)
26231-26254 (YW19 VNA/B/C/D/E/F/G/H/J/K/L/M/N/O/P/R/S/T/U/V/X/Y/Z, VPA): Stagecoach South East (Thanet)
26255-26275 (YW19 VRC/D/E/F/G/J/K/L/M/N/O/P/R/T/U/V/X/Y/Z, VSA/C): Stagecoach East Midlands (Hull)
26276-26293 (SN69 ZHA/B/C/D/E/F/G/H/J/K/L/M/O/P/R/S/U/V): Stagecoach North East (Stockton)
26294-26325 (SN69 ZHW/X/Y/Z, ZJE/J/K/O/U/V/0/Y/Z, ZKA/B/C/D/E/F/G/H/J/K/L/M/O/P/R/S/T/U/V): Stagecoach South (Basingstoke)
26326-26330 (YX69 NUH/O/P/U/V): Stagecoach East Scotland (Dunfermline)

28 ADL Enviro 200 MMC (10.8m)
37602-37615 (YX69 NXA/B/C/D/E/F/G/H/J)): Stagecoach Yorkshire (Sheffield Holbrook)
37616-37629 (SN69 ZGK/L/M/O/P/R/S/T/U/V/W/X/Y/Z): Stagecoach West (Cheltenham)

12 Volvo B8L/ADL Enviro 400MMC XLB
13901-13912 (BU69 XYB/A/D/C/E/F/G/H/K/L/M/J): Stagecoach East (Fenstanton /Busway)

34 BYD/ADL Enviro 400 400 electric
14001-14032 (LF69 UXP/S/T/U/V/W/X/Y/Z, UYA/B/C/D/E/G/H/J/K/L/M/N/O/P/R/S/T/U/V/W/X/Y/Z): Stagecoach Manchester (Sharston)
14033-14034 (LF69 UXN/UXO): Stagecoach East (Cambridge)

12 Optare Metrocity electric
25401-25412: Stagecoach South Wales (Caerphilly)

4 Optare Solo electric
48907-48911: Stagecoach South Wales (Caerphilly)

3 Optare Solo SR slimline
48041-48043 (YJ69 CPX/Y/Z): Stagecoach South Wales (Merthyr)

18 Volvo B8RLE/MCV
21351-21362 (BV19 LPA/C/E, LRF, LPJ/K/L/N/O/P/U/X): Stagecoach South Wales (Merthyr)
21363-21368 (BU69 XXA/B/C/D/E/F): Stagecoach East (Fenstanton/Busway)

14 Volvo B11RLE double deck coaches
50406-50411 (YX69 LCJ/F/G/E/C/A): Stagecoach West Scotland (Megabus/Cumbernauld)
50412-50419 (YX69 LBK/L/N/O/P/U/V/Z): Stagecoach West Scotland (CityLink/Cumbernauld)

8 Volvo B11R/Caetano Levante III coaches
54404-54411 (BV19 XPG/H/J/K/L/M/N, XSG): Stagecoach Yorkshire (National Express duties/Chesterfield)
54412 (BV69 KPL): Stagecoach Yorkshire (National Express duties/Chesterfield)