Update - new registrations for the Sprinters 

Alexander Dennis Enviro400MMC Euro6
10511-10525 (SN16 OLU/V/W/X, OMA/C/D/E/F/G/H/J/K/L/O): Glasgow.
10526-10533 (SN16 OMP/R/S/T/U/V/W/X): Aberdeen (Jet Livery)
10534-10551 (SN16 OMY/Z, ONA/B/C/D/F/G/H/J/K/L/M/O/P/R/S/T): Gillmoss
10552-10558 (SN16 ONU/V/W/X/Z, OOA/B): Kendal
10559-10563 (SN16 OOC/E/F/G/H): Morecambe
10564-10577 (SN16 OSZ, OTA/B/C/D/E/F/G/J/K/L/M/O/P): Gillmoss
10578-10608 (SN16 OTS/U/V/W/X/Y/Z, OUA/B/C/D/E/F/G/H/J/K/L/M/O, OVX/Y/Z, OWA/B/C/D/F/G/H/J): Manchester Ashton
10609-10617 (SN16 OWK/M/O/P/R/U/V/W/X): Manchester Hyde Road
10618-10630 (SN16 OWZ, OXA/B/C/D/E/F/G/H/J/K/M/O): Manchester Stockport
10631-10638 (SN16 OXP/R/S/Z, OYA/B/C/D): Newcastle Walkergate
10639-10654 (SN16 OYE/F/G/H/J/K/L/M, OZC/?/E/?/P/?/?/?): Newcastle Slatyford
10655-10663: Barnsley
10664-10666: Worksop
10667-10687: Oxford
10688-10697: Exeter
10698-10700: Winchester
10701-10725: Folkestone
10726-10733: Leamington 
10734-10748: Hull
10749-10760: Cheltenham (Gold)
10761-10778: Aldershot (Gold)
10779-10788: Oxford (Gold)

Alexander Dennis Enviro200MMC 11.8M Euro6
26041-26049 (SN16 OOJ/U/V/W/X/Y, OPA/B/C): Winchester
26050-26062 (SN16 OPD/F/G/H/J/K/L/M/O/R/S/T/U): Chester
26063-26080: Slatyford
26081-26087 (YY16 YJL/M/N/O/P/R/S): Chesterfield
26088-26111: Porth

Alexander Dennis Enviro200MMC Euro6
37431-37439 (SN16 OPV/W/X/Z, ORC/F/G/H/J): Kings Lynn
37440-37444 (SN16 ORX/Z, OSP/R/U): Rock Ferry (exactly allocation tbc - current reports suggest they are now for Chester)

Optare Solo SLR Euro6
48031-48036: Kings Lynn

Volvo B11R/Plaxton Elite Euro6
54284: East Scotland.

Volvo B11R/Plaxton Elite I Euro6
54277-54283: Rugby.

Volvo B11RT/Plaxton Elite Euro6
54331-54333: East Scotland
54334-54341: West Scotland

Alexander Dennis Enviro200MMC Euro6 London
36609-36621 (YX16 OHY/Z, OJZ, OKP/R/S/T/U/V/W/Z, OLA/B): Bromley

Alexander Dennis Enviro400H MMC Euro6 London
12364-12400 (YX16 OGD/E/F/G/H/J/K/L/M/N/O/P/R/S/T/U/V/W/Y/Z, OHA/B/C/D/E/F/G/H/J/K/L/N/O/P/R/S): Plumstead

Mercedes Benz Sprinter City 45
44001-44030 (BP16 UWN/O, BV66 GRU/X, BP16 UWT, BV66 GRZ, BP16 UWV, BV66 GSO/U/Y/Z, GTF/U/Y/Z, GUA/C/D/E/F/G/H/J/K/O/U/W/X, GVA): East Kent (Reports are vague - some reports say all 30 for Ashford while others say 7 for Ashford and 23 for Eastbourne)

Van Hool Astromega TDX27
50287-50292: Glasgow Megabus