23 September 1973 at Bocking
Meeting Abandoned
Third Leg of the RH Sidecars was ran at the Wimborne Whoppa on 7 October.
| 500cc | RH Sidecars | 350cc |
| 1- Brian Maxted | 1- Steve Smith & Roy French | 1- Stan Luck |
| 2- Brian Brown | 2- Roger Measor & Trevor Bullock | 2- Michael Smith |
| 3- Dave Baybutt | 3- Steve Todd & Frank Burke | 3- Trevor Banks |
| 4= John Britcher | 4- Peter Brown & John Mitton | 4= Steve Hartley |
| 4= Mike Beaumont | 5- Ken Smith & Mick Burr | 4= Colin Sweby |
| 6= Richard Beaumont & Julian Wigg | 6- Brian Stanford & Ray Stanford | 6- John Britcher |
| 250cc | ||
| 1- Dave Baybutt | ||
| 2- Dave Brown | ||
| 3- Denny Barber | ||
| 4- R. Church | ||
| 5- Bruce Carter | ||
| 6= Chris Packman & Mick Field |