| 7.4.1958 | NSCC Mallory Park [Sports] | 19 | | Jimmy Blumer | | 2nd |
| 7.4.1958 | NSCC Mallory Park [S1.3] | 19 | | Jimmy Blumer | | 3rd |
| 7.4.1958 | NSCC Mallory Park [S1.3] | 20 | | Alex McMillan | A. McMillan | 2nd |
| 7.4.1958 | NSCC Mallory Park [Sports] | 20 | | Alex McMillan | A. McMillan | 1st |
| 7.4.1958 | Goodwood [S1.1] | | | Ron Flockhart | | raced |
| 7.4.1958 | Goodwood [S1.1] | | | Keith Greene | | raced |
| 7.4.1958 | Goodwood [S1.1] | | | Peter Ashdown | | raced |
| 7.4.1958 | Goodwood [S1.1] | | | Gordon Fowell | | raced |
| 7.4.1958 | NSCC Mallory Park [Sports] | | | Colin Escott | | 3rd |
| 12.4.1958 | British Empire Trophy | 1 | | John Fisher | John Fisher | DNQ |
| 12.4.1958 | British Empire Trophy | 2 | #510 | Keith Greene | Gilby Engineering | 8th |
| 12.4.1958 | British Empire Trophy | 4 | #347 | Alan Stacey | Team Lotus | DNF |
| 12.4.1958 | British Empire Trophy | 5 | #349 | Peter Ashdown | Team Lotus | DNS |
| 12.4.1958 | British Empire Trophy | 6 | #345 | Keith Hall | Team Lotus | DNF |
| 12.4.1958 | British Empire Trophy | 7 | #506 | Mike Taylor | Innes Ireland Ltd. | 10th |
| 12.4.1958 | British Empire Trophy | 8 | #502 | Jack Westcott | Innes Ireland Ltd. | DNQ |
| 12.4.1958 | British Empire Trophy | 9 | #328? | Innes Ireland | Major R. C. Robinson | DNQ |
| 12.4.1958 | British Empire Trophy | 10 | #508 | Ron Flockhart | John Coombs Racing Organisation | DNF |
| 12.4.1958 | British Empire Trophy | 11 | #177 | Len Gibbs | Len Gibbs | DNQ |
| 12.4.1958 | British Empire Trophy | 12 | #313 | F. W. Aikens | J. G. Slater | DNQ |
| 12.4.1958 | British Empire Trophy | 14 | #340 | Peter Riley | Peter Riley | DNQ |
| 12.4.1958 | British Empire Trophy | 15 | #157? | Alex McMillan | Alex McMillan | DNQ |
| 12.4.1958 | British Empire Trophy | 16 | #290 | Jimmy Blumer | John A. Harris | DNQ |
| 12.4.1958 | British Empire Trophy | 17 | #311 | John Campbell-Jones | Dan Margulies | DNQ |
| 12.4.1958 | British Empire Trophy | 18 | | David Piper | David R. Piper | DNQ |
| 12.4.1958 | British Empire Trophy | 26 | #317 | Tom Dickson | Tom Dickson | DNQ |
| 12.4.1958 | British Empire Trophy | 28 | #321 | Henry Taylor | John V. Green | DNQ |
| 12.4.1958 | British Empire Trophy | 29 | #330 | Dick Prior | R. N. Prior | DNQ |
| 12.4.1958 | British Empire Trophy | 31 | #170 | Stuart Dodd | C. S. Dodds | DNQ |
| 12.4.1958 | Grand Central [1820 Settlers Handicap] | 32 | | Denis Davis | | raced |
| 12.4.1958 | British Empire Trophy | 32 | #316 | Douglas Graham | Innes Ireland Ltd. | DNQ |
| 12.4.1958 | Grand Central International [Sports] | 32 | | Denis Davis | | ?th |
| 12.4.1958 | British Empire Trophy | 33 | #325 | Gil Baird | Kieft Sports Car Co. Ltd. | DNQ |
| 12.4.1958 | British Empire Trophy | 44 | #307 | | J. M. Trimble | DNS |
| 12.4.1958 | British Empire Trophy | 47 | #178 | John Higham | Ecurie White Rose | DNQ |
| 12.4.1958 | British Empire Trophy | 49 | | Bill Frost | Car Exchange | DNA |
| 12.4.1958 | British Empire Trophy | 51 | #319 | Mike Dickens | Team Sapphire | DNQ |
| 12.4.1958 | British Empire Trophy | 52 | #269 | Geoff Williamson | G. H. Williamson | DNQ |
| 12.4.1958 | British Empire Trophy | 53 | #168 | Peter Arundell | Peter J. Arundell | DNA |
| 12.4.1958 | British Empire Trophy | 57 | #328 | Gordon Jones | E. Payne | 6th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 27 | | Skip Conklin | Skip Conklin | 20th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 39 | | James Lowe | James Rowland Lowe | 12th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 44 | | Frank Monise | Frank Monise | 7th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 55 | | Pete Lovely | Sam Weiss | 4th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 102 | | Jack Nethercutt | Jack Nethercutt | 8th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 166 | #322=>332 | Jim Hall | Carroll Shelby | 5th |
| 13.4.1958 | Coupes de Vitesse [GT] | | | Jean Thépenier | | 5th |
| 13.4.1958 | Coupes de Vitesse [S2.0] | | | Bill Frost | | 6th |
| 13.4.1958 | Coupes de Vitesse [S2.0] | | | Jean-Claude Vidilles | | 5th |
| 19.4.1958 | Aintree 200 [S1.1] | 35 | | Keith Hall | Team Lotus | 1st |
| 19.4.1958 | Aintree 200 [S1.1] | 36 | | Alan Stacey | Team Lotus | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 37 | | Peter Ashdown | Team Lotus | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 38 | | Innes Ireland | Rupert Robinson | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 39 | #506 | Mike Taylor | Innes Ireland Ltd. | 5th |
| 19.4.1958 | Aintree 200 [S1.1] | 40 | #316 | Douglas Graham | Innes Ireland Ltd. | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 41 | | Christopher Martyn | Innes Ireland Ltd. | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 42 | | Jack Westcott | Innes Ireland | DNA |
| 19.4.1958 | Aintree 200 [S1.1] | 43 | | Jimmy Blumer | Car Exchange (Brighton) Ltd. | 6th |
| 19.4.1958 | Aintree 200 [S1.1] | 44 | | Tom Dickson | Cranham Service Station | 2nd |
| 19.4.1958 | Aintree 200 [S1.1] | 45 | | John Campbell-Jones | Dan Margulies | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 46 | | David Piper | David Piper | 9th |
| 19.4.1958 | Aintree 200 [S1.1] | 47 | | Malcolm Templeton | Malcolm Templeton | DNA |
| 19.4.1958 | Aintree 200 [S1.1] | 48 | | Alex McMillan | Kieft Sports Car Co. Ltd. | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 49 | #321 | Henry Taylor | JV 'John' Green | 4th |
| 19.4.1958 | Aintree 200 [S1.1] | 50 | | Bob Hicks | Car Exchange (Brighton) Ltd. | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 51 | | Peter Arundell | Cranham Service Station | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 52 | | Colin Escott | Colin Escott | 10th |
| 19.4.1958 | Aintree 200 [S1.1] | 53 | | Barry Harpin | B. Harpin | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 54 | | Bob Hudson | Team Triple "S" | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 55 | | Gordon Fowell | Arden Racing and Sports Cars | 7th |
| 19.4.1958 | Aintree 200 [S1.1] | 65 | | Stuart Dodd | CS 'Stuart' Dodd | raced |
| 19.4.1958 | Aintree 200 [S1.1] | 66 | | John Burgess | Ecurie White Rose | raced |
| 19.4.1958 | Aintree 200 [S+1.1] | 91 | | Tony Marsh | Max Trimble | DNF |
| 19.4.1958 | Aintree 200 [S+1.1] | 92 | | Mike Dickens | Team Sapphire | DNA |
| 19.4.1958 | Aintree 200 [S+1.1] | 93 | | John Higham | Ecurie White Rose | DNF |
| 20.4.1958 | Preliminary Galveston [FM+GM+HM] | 2 | | Todd Aikens | | 3rd |
| 20.4.1958 | Preliminary Galveston [FM+GM+HM] | 15 | #150 | Bob Aylward | | 4th |
| 20.4.1958 | SCCA National Marlboro [EP+GM] | 35 | | Frank Baptista | | 1st |
| 20.4.1958 | Preliminary Galveston [FM+GM+HM] | 54 | | Dave Tallaksen | | 2nd |
| 20.4.1958 | SCCA Regional Galveston [Modified] | 54 | | Dave Tallaksen | | 10th |
| 20.4.1958 | SCCA National Marlboro [EP+GM] | 68 | | Bill Bowman | | 7th |
| 20.4.1958 | SCCA National Marlboro [EP+GM] | 118 | | Floyd Aaskov | | 6th |
| 20.4.1958 | Marlboro [Handicap 1st Heat] | 136 | | Sy Kaback | | 6th |
| 20.4.1958 | BRSCC Brands Hatch [S1.2] | | | G. E. Holland-Martin | | 1st |
| 26.4.1958 | BARC Goodwood [S1.25] | 1 | #510 | Keith Greene | | 1st |
| 26.4.1958 | BARC Goodwood [S1.5] | 1 | #510 | Keith Greene | | 1st |
| 26.4.1958 | BARC Goodwood [S1.25] | 17 | | Jack Westcott | | 3rd |
| 26.4.1958 | BARC Goodwood [S1.5] | | | Jack Westcott | | 2nd |
| 26.4.1958 | BARC Goodwood [S1.5] | | | Peter Arundell | | raced |
| 26.4.1958 | BARC Goodwood [S1.5] | | #506 | Mike Taylor | | 3rd |
| 26.4.1958 | BARC Goodwood [S1.25] | | | Peter Arundell | | raced |
| 26.4.1958 | BARC Goodwood [S1.25] | | | John Campbell-Jones | | DNF |
| 26.4.1958 | BARC Goodwood [S1.25] | | #506 | Mike Taylor | | 2nd |
| 27.4.1958 | WJC Charterhall [S1.5] | 18 | | Andy Walker | A. Walker | DNA |
| 27.4.1958 | WJC Charterhall [S1.5] | 21 | | Malcolm Templeton | M. Templeton | 3rd |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 26 | | Louis Bartol | | 10th |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 45 | | Gilbert Geitner | | 5th |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 101 | | Thomas Scatchard | | 18th |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 136 | | Sy Kaback | | 16th |
| 27.4.1958 | Preliminary Louisville [BM+CM+DM+EM+FM+GM] | | | Norm Risen | | DNF |