1973 250cc National Races

11th March - Cadwell Park

25th March - Brands Hatch

15th April - Thruxton

20th April - Brands Hatch

22nd April - Mallory Park

23rd April - Oulton Park

10th June - Mallory Park

Leon Cooper 250 - 1st - July - Olivers Mount

5th August - Brands Hatch

27th August - Oulton Park

9th September - Olivers Mount

16th September - Mallory Park

23rd September - Cadwell Park

29th September - Croft

21st October - Snetterton