A number of Master Record Books survive in the Archive and are organised into Model Assembly Lists (MALs), Releases, Modifications and Amendements. These are organised as shown in the following table.
| Year | Releases | Modifications | Amendments | MAL | |||
| North | Stoke | North | Stoke | North | Stoke | ||
| B | AMB201-400, AMB401-992 | AAB401-636 | |||||
| C | RAC001-RAC100, RAC101-RAC140G | RAC5/000-RAC5/005 | AMC850-1348 | AMC5/256A-300 | AAC1001-1327 | AAC5/000-99, AAC5/100-651 | |
| F | F101A01-198A01 | FMSC01-C05 | FANC01-01B | FASC01-C05 | |||
| G | G101D01-101H02B | GMND01-H22 | GMSD01-H15 | GAND01-H94 | GASD01-J10 | ||
| H | H148B01-158B02 | HMNC01-M14 | HMSC01-M38 | HANC01-M21 | HASC01-M25 | yes | |
| 3 | 3110A01-172J01 | yes | |||||
| 4 | 4101K01-158A02 | yes | |||||
| 5 | 5101K01-180L01 | yes | |||||
| 6 | 6120L01-180L01 | ||||||
It is interesting to note that the records for what is referred to as the North Factory (Linwood) and the Stoke Factory appear to be distinct, presumably reflecting the different parts of the production process carried out on each site.
We now simply list the first and last and a few other interesting sheets from these books. There are too many to give a complete list.
| Sheet | Date | ECR | Description |
| Releases | |||
| RAC001 | 5/3/62 | Ape Saloon Series I specification | |
| RAC100 | 6/9/65 | MkII Hillman Imp de-Luxe Venezuela | |
| RAC101 | 8/9/65 | Commer Imp Van variable units | |
| RAC140G/1 | 7/3/68 | Bond 875 3-wheeler | |
| RAC203 | 7/10/69 | Conver North Factory parts lists into Folio form | |
| RAC5/000 | 19/2/64 | Imp Series I Engine (Stoke) | |
| RAC5/005 | 1/12/65 | 875cc Imp Marine Engine | |
| RAC5/007 | 8/8/66 | 875cc engine Imp Estate Car | |
| RAC5/009 | 20/10/67 | 875cc Imp Police Car (low compression) | |
| RAC5/011A | 3/9/67 | Imp Police Car (facelift) | |
| F101A01 | 28/1/70 | ||
| F198A01 | 23/1/70 | ||
| G101D01 | 22/5/70 | ||
| G101H02B | 27/10/70 | ||
| H148B01 | 27/1/71 | ||
| H158B02 | 9/2/72 | ||
| 3110A01 | 1/12/71 | ||
| 3172J01 | 21/9/72 | ||
| 4101K01 | 11/5/73 | ||
| 4158A02 | 8/2/73 | ||
| 5101K01 | 20/9/73 | ||
| 5180L01 | 23/6/75 | ||
| 6120L01 | 10/1/75 | ||
| 6180L01 | no date | ||
| Modifications | |||
| AMB201 | 7/7/64 | 250/8 | Hillman Imp Series I CKD body sides and roof |
| AMB400 | 24/1/66 | 15424 | Hillman Imp MkII Folio 57 |
| AMB401 | 25/1/66 | 15431 | All models Folio 54 |
| AMB992 | 5/12/69 | 1951 | modifications to rationalise tyre pressure transfer |
| AMC850 | 11/5/66 | 2090 | Sumbeam Imp Sport (was Super Imp GT Saloon) |
| AMC1348 | 28/1/70 | Imp Models Linwood Engine | |
| AMC5/256A | 23/11/67 | 5786A | Engine and clutch |
| AMC5/300 | 30/10/69 | 2105 | Engine (Stoke) |
| FMSC01 | 3/12/69 | 2105 | Engine (Stoke) |
| FMSC05 | 13/3/70 | 1821 | change to temp. switch |
| GMSD01 | 7/4/70 | 2144 | |
| GMSH15 | 22/2/72 | 6626 | Engine (Stoke) |
| HMSC01 | 23/5/72 | 8761 | 3-series, re-design of stop-tail lamps |
| HMSM38 | 5/2/76 | PCR14213A2 | |
| GMND01 | 24/3/70 | 3241 | |
| GMNH22 | 22/3/72 | 8106 | seat belt ``ease of use'' regulation |
| HMNC01 | 23/5/72 | 7914 | cost saving |
| HMNM14 | 5/1/76 | 15146 | new door assy. Imp de-Luxe |
| Amendments | |||
| AAB401 | 18/1/65 | Hillman Imp Saloon Folio 50 | |
| AAB636 | 8/10/69 | Complete Imp Range BU except Van | |
| AAC1001 | 12/10/66 | Changes in synchro cone marking | |
| AAC1326 | 28/8/69 | Apex BU and CKD specification | |
| AAC1327 | no date | Complete Imp range BU except Stiletto electric clock | |
| AAC5/000 | 14/1/63 | Apex seris I engine specification clarification to drwg | |
| AAC5/099 | 11/11/63 | G.Clancy Ltd. alternative supplier of tappet | |
| AAC5/100 | 11/11/63 | Series I engine specification | |
| AAC5/651 | 27/11/69 | new Pollard w/pump brg | |
| FANC01 | 20/2/70 | 2078 | added F2 series colours POrtugal CKD |
| FANC01B | 19/5/70 | 2078 | new colours for 1970, F2 and G series |
| GAND01 | 16/4/70 | 1758 | cost reduction |
| GANH94 | 10/4/72 | 7693 | add spacer washer to bumper back bar |
| HANC01 | 15/5/72 | 8668 | 3-series colours |
| HANM21 | 9/1/76 | 15026 | modification to reverse lamp late eng. compt. lid Super Imp |
| FASC01 | 21/1/70 | 1599 | change to cyl. head gasket |
| FASC05 | 23/2/70 | 814 | clarification to jig location |
| GASD01 | 10/3/70 | change to UPG codes | |
| GASJ10 | 22/3/72 | 8378 | change to front hub brg. to reduce costs |
| HASC01 | 12/5/72 | 4674 | anneal castings to avoid breakages |
| HASM25 | 27/1/76 | 15311 | re-position reverse lamp cable |