I’ve made progress.
The guys at Lubetec (UK) and Hardinge (UK) have been very helpful.

The IM units are Interlube parts. Below is the cross reference with Bijur.
IM22 = FJB0/3
IM23 = FJB00
IM24 = FJB0
IM25 = FJB1

Hardinge (UK) didn’t have the full schematic, just the X and Y details.
From all the info I’ve got this is what I think is required.

Bridgeport series 1 CNC MDI (mechanically identical to an R2E3) lubrication meters.
Knee RH – 0/3
Knee Jack Screw – 0/3
Knee LH – 0/3
Y Ballscrew -00
X ballscrew -1
Saddle L and R – 0
Table (all meters) – 1
From the first 3-way manifold after the pump it splits off to the head via a single meter unit. This single FJB -0/3 meter is there as an anti-syphon device (I think, as this seems a bit strange to me).
Quill – 00
Z Ballscrew – 0
Back gear Slide – 0

Thanks for all your help!