For reference (and to illustrate the paintwork is somewhat random):
GBRf 92s:
GBST pool (UK freight, Mk5 sleeper and tunnel capable) - 010, 018, 038 (CS livery); 028, 043 (GBRf livery)
GBSL pool (UK freight and Mk5 sleeper, NOT tunnel) - 006, 014, 023, 033 (CS livery); 020 (GBRf livery)
GBCT...