| 27.1.1958 | South Pacific Championship | | | Sulman | | 2nd |
| 27.1.1958 | South Pacific Championship | | | David McKay | | 1st |
| 8.2.1958 | Preliminary Pomona [Modified +1.5] | 35 | #109 | Keith Hoyt | Keith Hoyt | DNA |
| 8.2.1958 | Preliminary Pomona [Modified +1.5] | 59 | | Bob Oker | Joe Lubin | DNS |
| 9.2.1958 | Pomona [S+1.5] | 35 | #109 | Keith Hoyt | Keith Hoyt | DNA |
| 9.2.1958 | Pomona [S+1.5] | 59 | | Bob Oker | Joe Lubin | 2nd |
| 9.2.1958 | Consolation Pomona [Modified] | 59 | | Bob Oker | Joe Lubin | 1st |
| 9.2.1958 | Guadalajara | | | Bob Oker | | DNA |
| 2.3.1958 | SCCA Regional Phoenix [S+1.5] | | | Bob Oker | | DNS |
| 23.3.1958 | SCCA Regional Stockton [S+1.5] | 4 | #112 | Jack Graham | Jack Graham | 10th |
| 29.3.1958 | BARC Mallory Park [Closed Handicap] | 41 | #120 | Jean Bloxam | Mrs. Jean Bloxam | 3rd |
| 29.3.1958 | BARC Mallory Park [S+1.1] | 41 | #120 | Jean Bloxam | Mrs. Jean Bloxam | 6th |
| 29.3.1958 | BARC Mallory Park [S+1.1] | 42 | | G. Ward Thomas | E. Portman | 3rd |
| 7.4.1958 | Sussex Trophy Goodwood | 64 | #120 | Jean Bloxam | | raced |
| 7.4.1958 | Sussex Trophy Goodwood | | | Denis Barthel | | ?th |
| 7.4.1958 | Sussex Trophy Goodwood | | | Portman | | ?th |
| 7.4.1958 | Sussex Trophy Goodwood | | | John Dalton | | ?th |
| 12.4.1958 | British Empire Trophy | 65 | #10 | John Dalton | John Dalton | 7th |
| 12.4.1958 | British Empire Trophy | 73 | #6a | Graham Whitehead | A. G. Whitehead | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [BM+CM+DM+EM] | 24 | #112 | Jack Graham | Jack Graham | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [BM+CM+DM+EM] | 32 | #115 | William de Creeft | William de Creeft | 12th |
| 13.4.1958 | SCCA Regional Palm Springs [BM+CM+DM+EM] | 35 | #109 | Keith Hoyt | Keith Hoyt | 15th |
| 13.4.1958 | SCCA Regional Palm Springs [BM+CM+DM+EM] | 59 | #8 | Bob Oker | Joe Lubin | 3rd |
| 19.4.1958 | Aintree 200 [S+1.1] | 69 | | John Dalton | John Dalton | 10th |
| 19.4.1958 | Aintree 200 [S+1.1] | 70 | | Jean Bloxam | Gerrards Cross Motor Co. Ltd. | 15th |
| 3.5.1958 | Daily Express Silverstone [S+1.5] | | | Graham Whitehead | | 10th |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 4 | | Jack Graham | Jack Graham | 5th |
| 11.5.1958 | Hawaii [S+1.6] | 32 | | William de Creeft | William DeCreeft | 12th |
| 11.5.1958 | Hawaii [Match] | 32 | | William de Creeft | William DeCreeft | DNA |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 54 | | Rod Carveth | Rod Carveth | 6th |
| 15.5.1958 | Eläintarhanajo | 11 | | Graham Whitehead | | 2nd |
| 24.5.1958 | Whitsun Goodwood | | | John Dalton | | 4th |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 54 | #11 | Rod Carveth | Rod Carveth | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 232 | #115 | William de Creeft | William de Creeft | DNA |
| 1.6.1958 | 1000 km Nürburgring | 17 | #6a | Whitehead / Whitehead | A. G. Whitehead | 8th |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 54 | #11 | Rod Carveth | Rod Carveth | 8th |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 76 | | Fred Windridge | | 9th |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 232 | #115 | William de Creeft | William de Creeft | 10th |
| 1.6.1958 | Consolation Santa Barbara [Modified] | | | Bob Drake | | ?th |
| 15.6.1958 | SCCA Regional Laguna Seca [CM+DM+EM] | 54 | #11 | Rod Carveth | Rod Carveth | 6th |
| 22.6.1958 | 24 h Le Mans | 5 | #6a | Whitehead / Whitehead | A. G. Whitehead | 2nd |
| 22.6.1958 | 24 h Le Mans | 21 | #117 | | Jean-Paul Colas | DNA |
| 29.6.1958 | BARC Mallory Park [Sports Unlimited] | | | John Dalton | | 2nd |
| 5.7.1958 | National Open Crystal Palace | 47 | | Graham Whitehead | A. G. Whitehead | 3rd |
| 5.7.1958 | National Open Crystal Palace | 48 | | John Dalton | L'Equipe Derbian | raced |
| 6.7.1958 | SCCA Regional Vaca Valley [CM+DM+EM] | 54 | | Rod Carveth | Rod Carveth | 7th |
| 19.7.1958 | GP Silverstone | 30 | #6a | Graham Whitehead | Graham Whitehead | 14th |
| 20.7.1958 | SCCA Regional Thompson [Modified+UR] | 76 | | Paul Hyatt | | raced |
| 3.8.1958 | SCCA Regional Shelton [S+1.5] | 154 | | Rod Carveth | | DNA |
| 4.8.1958 | BRSCC Brands Hatch [S+1.9] | 86 | | Graham Whitehead | Graham Whitehead | 4th |
| 4.8.1958 | BRSCC Brands Hatch [S+1.9] | 87 | | Jean Bloxam | Jean Bloxam | raced |
| 10.8.1958 | Kanonloppet [Sports] | 3 | #6a | Graham Whitehead | | 6th |
| 16.8.1958 | Roskilde Ring [S+1.5] | 23? | #6a | Graham Whitehead | | raced |
| 23.8.1958 | BARC Goodwood [Handicap A] | | | Jean Bloxam | | 2nd |
| 23.8.1958 | BARC Goodwood [Handicap D] | | | Jean Bloxam | | 2nd |
| 30.8.1958 | NSCC Silverstone [Formula Libre Heat 2] | 59 | #120 | Jean Bloxam | Mrs. J. Bloxam | DNA |
| 30.8.1958 | NSCC Silverstone [S+2.7] | 59 | #120 | Jean Bloxam | Mrs. J. Bloxam | DNA |
| 30.8.1958 | NSCC Silverstone [Formula Libre Heat 2] | 60 | | Roy Bloxam | R. Bloxam | DNA |
| 30.8.1958 | NSCC Silverstone [S+2.7] | 60 | | Roy Bloxam | R. Bloxam | DNA |
| 30.8.1958 | NSCC Silverstone [Formula Libre Heat 2] | 62 | | John Dalton | J. Dalton | DNA |
| 30.8.1958 | NSCC Silverstone [S+2.7] | 62 | | John Dalton | J. Dalton | DNA |
| 30.8.1958 | NSCC Silverstone [Formula Libre Heat 2] | 63 | | Edward Portman | E. Portman | DNA |
| 30.8.1958 | NSCC Silverstone [S+2.7] | 63 | | Edward Portman | E. Portman | DNA |
| 31.8.1958 | Santa Barbara [BM+CM+DM] | 32 | | William de Creeft | | 8th |
| 6.9.1958 | Sunbac Silverstone [S+1.5] | | #120 | Jean Bloxam | | raced |
| 6.9.1958 | Sunbac Silverstone [S+1.5] | | #101 | Bill Moss | | raced |
| 6.9.1958 | Sunbac Silverstone [Hadicap 2] | | #120 | Jean Bloxam | | 3rd |
| 6.9.1958 | Sunbac Silverstone [Formula Libre Handicap] | | #101 | Bill Moss | | 4th |
| 7.9.1958 | 500 mile Road America | 54 | | Rod Carveth | | DNS |
| 7.9.1958 | Scott-Brown Memorial Snetterton [S+1.1] | 58 | #101 | Bill Moss | Bill Moss | 4th |
| 20.9.1958 | Oulton Park International [S+1.1] | 35 | #10 | John Dalton | John Dalton | 6th |
| 20.9.1958 | Oulton Park International [S+1.1] | 36 | #2 | Roy Bloxam | Gerrards Cross Motor Co. Ltd. | ?th |
| 20.9.1958 | Oulton Park International [S+1.1] | 37 | #120 | Jean Bloxam | Gerrards Cross Motor Co. Ltd. | DNF |
| 20.9.1958 | Oulton Park International [S+1.1] | 43 | #101 | Bill Moss | Kieft Sports Car Co. Ltd. | DNF |
| 20.9.1958 | GP Watkins Glen | 54 | #11 | Rod Carveth | Rod Carveth | DNA |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 54 | | Rod Carveth | | 9th |
| 5.10.1958 | Australian TT | | | David McKay | | 1st |
| 11.10.1958 | SMRC Snetterton [Sports] | 77 | | John Dalton | J. Dalton | 6th |
| 11.10.1958 | SMRC Snetterton [Sports] | 78 | | Roy Bloxam | R. F. Bloxam | DNS |
| 12.10.1958 | USAC Riverside | 259 | | William de Creeft | Bill de Creeft | 21st |
| 25.10.1958 | Preliminary Minden [BM+CM+DM+EM] | | | Jack Graham | | ?th |
| 26.10.1958 | Minden [BM+CM+DM+EM] | 4 | | Jack Graham | | 2nd |
| 9.11.1958 | SCCA Regional Laguna Seca [BM+CM+DM] | 12 | | Jack Graham | Jack Graham | 5th |
| 9.11.1958 | SCCA Regional Laguna Seca [BM+CM+DM] | 154 | | Rod Carveth | Rod Carveth | raced |
| 16.11.1958 | GP Macau | | | Chan Lye-Choon | C. L. Choon | 1st |