(New fleet numbers from 400
to 499)
Numbered in age sequence
| New | Old | Reg.No. | Engine | Comments |
| 401 | 600 | KMR608 | Gardner | 1954 withdrawn 5/75 |
| 402 | 601 | KMR609 | Gardner | 1954 withdrawn 1/76 |
| 403 | 602 | KMW109 | Gardner | 1954 withdrawn (9094), to Martins (Q) 3/81, |
| 404 | 603 | KMW345 | Gardner | 1954 withdrawn 6/75 |
| 405 | 604 | KMW916 | Gardner | 1954 Gosport & Fareham (9096) withdrawn 2/81 |
| 406 | 605 | KMW917 | Gardner | 1954 withdrawn 11/75 |
| 407 | 606 | LHR155 | Bristol | 1955 |
| 408 | 607 | LMR740 | Bristol | 1955 |
| 409 | 608 | LMR741 | Bristol | 1955 withdrawn 4/75 |
| 410 | 609 | LMR742 | Bristol | 1955 Fire damaged at Basingstoke 21/9/74 |
| 411 | 610 | LMW680 | Bristol | 1955 withdrawn 9/75 |
| 412 | 611 | LMW914 | Bristol | 1955 withdrawn 2/75 |
| 413 | 612 | LMW915 | Bristol | 1955 withdrawn 2/75 |
| 414 | 613 | LMW916 | Bristol | 1955 |
| 415 | 614 | MMW411 | Bristol | 1956 withdrawn 5/75 |
| 416 | 615 | MMW412 | Bristol | 1956 withdrawn 4/74 |
| 417 | 616 | MMW413 | Bristol | 1956 withdrawn 2/76 |
| 418 | 617 | NHR844 | Bristol | 1956 withdrawn 5/75 |
| 419 | 618 | NHR845 | Bristol | 1956 withdrawn 5/75 |
| 420 | 619 | NHR909 | Bristol | 1956 withdrawn 5/75 |
| 421 | 620 | OAM969 | Gardner | 1956 withdrawn 3/75 |
| 422 | 621 | OHR57 | Gardner | 1956 withdrawn 7/75 |
| 423 | 622 | OHR123 | Gardner | 1956 withdrawn 3/75 to (9097) withdrawn 9/81, |
| 424 | 624 | OHR382 | Gardner | 1956 withdrawn 7/75 |
| 425 | 625 | OHR509 | Gardner | 1956 withdrawn 5/75 sold 1/76 |
| 426 | 626 | OHR708 | Gardner | 1956 withdrawn 5/75 |
| 427 | 627 | OHR709 | Gardner | 1956 withdrawn 6/75 |
| 428 | 628 | OHR919 | Gardner | 1956 Gosport & Fareham (9092) withdrawn 2/81 |
| 429 | 629 | OHR918 | Gardner | 1956 withdrawn 8/75 |
| 430 | 630 | PMR913 | Gardner | 1956 |
| 431 | 631 | PMR914 | Gardner | 1956 |
| 432 | 632 | PWV353 | Gardner | 1958 withdrawn 4/76 |
| 433 | 633 | PWV526 | Gardner | ? |
| 434 | 634 | SHR440 | Gardner | ? |
| 435 | 635 | SHR441 | Gardner | ? |
| 436 | 636 | TMW273 | Gardner | 1959 to Omnibus Promotions (Q) 2/76 |
| 437 | 637 | UAM941 | Gardner | 1959 |