As with the RM series cars, identifying annual production figures is not so easy as with prewar cars. This was made more complex by the introduction of BMC-standard chassis numbers.
The Riley 2.6 continued with a similar system to the Pathfinder, except that a 'U' was used in place of the 'M' to identify a 2.6.
However, the 1.5 used a new system - standard across the BMC range. The prefix was initially HSR1/ simply indicating Riley (R) model 1! numbering ran from 501-18121 for the MkI, and on to HSR1/27897 for the MkII.
However, the MkIII had a different prefix (both to mark it as a different model, and because BMC were changing all prefixes!). The new numbers ran from R/HS2/101-12184 (The R again indicates Riley).
The 4/68 Used R/HS1/101-11084, and the 4/72 R/HS3/11101-25291.
The Mini based Elf had it's own prefix, but the actual numbers ran in sequence with all Mini-based models. The MkI ran from R/A2S1/156851-310706. The MkII started at R/A2S2/369601, and the MkIII ran from R/A2S3/930221-1337993. Total production is estimated at just under 31,000 units.
The Kestrel range started at R/AS1/101 for the Kestrel 1100, ceasing at R/AS1/13421. However, the Kestrel 1275 and Kestrel 1300 cars had used the same numbers, with the Kestrel 1300 having the prefix of R/AS4. production ran from R/AS4/12224-16714.
The 1300 saloon (the Kestrel name being dropped) ran from R/A4S5/16715-21629.
For all cars, the A is thought to identify an A-series, the H a B-series? and the S a Saloon. Quite why the Elf is A2, when it started production before the Kestrel is unclear!
Total production figures were therefore:
| Years | Model | Total |
| 1957-9 | Two point Six | 2,000 |
| 1957-65 | One point Five | 39,568 |
| 1959-61 | 4/68 | 10,984 |
| 1961-9 | 4/72 | 14,151 |
| 1961-9 | Elf | 30,912 |
| 1965-9 | Kestrel / 1300 | 21,529 |
