Does anyone have a list with definitions of the early stores BI / BA numbers on Lee Enfield equipment?

During a chest restoration I found a BA number(BA 6247), that I took as an early Maltby serial - seems it is actually a post war assembly number for the Transit Chest CES. When researching this I found a few other different numbers that would serve the same purpose (one for scope-less - BA 8738). More recently released from stores gear seems to have BA 10K numbers - then the change over to the longer codes

Would these numbers be incremented for each CES / specification change to the described assembly? (hence the variety?) Can we list the applicable BA numbers with dates of usage and specifications for the No4 T family?

Yours, Intrigued in PA.
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