The BR Class 375/6 "Electrostar" (centre motor) and trailer (with pantograph) labels appear to be the wrong way round and need to be swapped.
The BR-377-7Middle2 has no English text because the entry in en.tab is missing the BR- prefix.
Likewise the BR-375Middle2 has no English text because en.tab is missing the final 2.
Thank you for that - now fixed.