1973 350cc National Races

11th March - Cadwell Park

17th March - Oulton Park

15th April - Thruxton

20th April - Brands Hatch

22nd April - Mallory Park

23 April - Oulton Park

6th May - Cadwell Park

10th June - Mallory Park

Whittaker 350 - 1st July - Olivers Mount

5th August - Brands Hatch

12th August - Silverstone

26th August - Snetterton

27th August - Oulton Park

9th September - Olivers Mount

16th September - Mallory Park

16th September - Mallory Park

23rd September - Cadwell Park

29th September - Croft

21st October - Snetterton

28th October - Brands Hatch