9 September 1973 at South Hykeham
| 350cc – 500cc (Alf Ellis Trophy) | RH Sidecars (3) | 350cc – 500cc |
| 1- Richard Moore | 1- Dave Hallam & Dave Derbyshire | 1- Brian Maxted |
| 2- Brian Brown | 2- Steve Todd & Frank Burke | 2- Brian Brown |
| 3- B. Lowis | 3- Mick Dawkins & J. Hall | 3- Cyril Jones |
| RH Sidecars (2) | Invitation | RH Sidecars (1) |
| 1- Steve Todd & Frank Burke | 1- ANOther | 1- Mick Humberstone & Hayden Gavey |
| 2- Dave Hallam & Dave Derbyshire | 2- Fred Twell | 2- Roger Measor & Trevor Bullock |
| 3- Alan Blewitt & Clive Jinks | 3- Gordon James | 3- Steve Todd & Frank Burke |
| 350cc | RH Sidecars (Invitation) | 250cc |
| 1- Mick Nicholson | 1- Ted Tucker & Dave Ward | 1- Bill Stanford |
| 2- Bill Stanford | 2- Bob Attwell & Tony Attwell | 2- Mick Nicholson |
| 3- Andrew Nelson | 3- Bill Drury & Trev Allcock | 3- Cyril Jones |
| RH Sidecars (Eight Fastest) | ||
| 1- Dave Hallam & Dave Derbyshire | ||
| 2- Alan Blewitt & Clive Jinks | ||
| 3- Mick Dawkins & J. Hall |
19 August 1973 at South Hykeham
| 500cc | RH Sidecars | 350cc |
| 1- Bill Lowis | 1- Pete Robson & Dave Hopes | 1- Tig Perry |
| 2- Tig Perry | 2- Steve Todd & Frank Burke | 2- John Britcher |
| 3- Tim Pepper | 3- Brian Stanford & Ray Stanford | 3- Chris Baybutt |
| 5= Richard Moore | 4- Peter Hill & Barry Haines | 4- Stan Luck |
| 5= Roland Duke | 5- Steve Smith & Roy French | 5- Colin Sweby |
| 6- Mike Garrad | 6- Colin Packman | |
| 250cc | ||
| 1= Tig Perry | ||
| 1= Chris Baybutt | ||
| 3- Denny Barber | ||
| 4- Colin Packman | ||
| 5- Arthur Livings | ||
| 6- Dave Brown |