Mr Thant wrote:

The problem is the Rolling Stock Plan (the 1300) only covers until ca.
2014, which means only the first batch of NGEMU are included in it
(the 1100, due in 2015) . Roger Ford says 100 carriages.

The NGEMUs are distinct from the RSP 1300 (well the latest figure is
more like 1200+ but I can't remember exactly what it is). According to a
certain Modern Railways contributor (yes, it's Roger again), the DfT are
recommending that 256 of the 'RSP 1300' should be set aside for FCC.

64 of these will be allocated to FCC GN (10 321s + 8 313s), which means
FCC TL will be allocated 192 vehicles, of which 92 are the 23 377s
coming over for KO0 (March 2009). That leaves 100 vehicles for KO1
(December 2011), which will most likely be 25 377s and certainly not
NGEMUs as you suggest - the first NGEMU won't even be in passenger
service for another 2 months!