1973 British League Division Two season
The 1973 British League Division Two season was the second tier of motorcycle speedway in Great Britain.
Summary
The 1973 season saw the league expanded to 18 teams with the addition of Chesterton Potters. The team had last raced during the 1963 Provincial Speedway League season under the name of the Stoke Potters.Boston Barracudas won their first title and went on to win the league and cup double. Boston had finished runner-up to Crewe Kings the previous season, with decent season averages recorded by five riders Arthur Price, Jim Ryman, Carl Glover, Russ Osborne and Ray Bales. With a largely unchanged team, they went one place better by sealing the league title. Boston won easily, 14 points clear of their nearest rival, and four of the five riders improved their averages from 1972. Arthur Price also won the Riders' Championship.
Fixtures and results
v=Void at 39-36, not restagedBritish League Division Two Knockout Cup
The 1973 British League Division Two Knockout Cup was the sixth edition of the Knockout Cup for tier two teams. Boston Barracudas were the winners of the competition.First round
| Date | Team one | Score | Team two |
| 19/05 | Canterbury | 44-34 | Eastbourne |
| 13/05 | Eastbourne | 37-41 | Canterbury |
Second round
| Date | Team one | Score | Team two |
| 03/06 | Boston | 58-20 | Crewe |
| 04/06 | Crewe | 44-34 | Boston |
| 08/06 | Peterborough | 56-22 | Barrow |
| 05/06 | Barrow | 45-32 | Peterborough |
| 13/06 | Bradford | 48-29 | Ellesmere Port |
| 05/06 | Ellesmere Port | 42-35 | Bradford |
| 04/06 | Birmingham | 46-32 | Scunthorpe |
| 03/06 | Scunthorpe | 38-40 | Birmingham |
| 08/06 | Workington | 45-33 | Berwick |
| 09/06 | Berwick | 42-36 | Workington |
| 31/05 | Teesside | 48-30 | Sunderland |
| 08/06 | Sunderland | 38-40 | Teesside |
| 09/06 | Rayleigh | 46-32 | Hull |
| 30/05 | Hull | 43-34 | Rayleigh |
| 07/06 | Long Eaton | 48-30 | Canterbury |
| 09/06 | Canterbury | 42-36 | Long Eaton |
Quarter-finals
| Date | Team one | Score | Team two |
| 24/06 | Boston | 50-28 | Peterborough |
| 29/06 | Peterborough | 37-41 | Boston |
| 04/07 | Bradford | 48-30 | Birmingham |
| 02/07 | Birmingham | 47-31 | Bradford |
| 27/07 | Workington | 53-25 | Teesside |
| 26/07 | Teesside | 44-33 | Workington |
| 21/07 | Rayleigh | 49-29 | Long Eaton |
| 26/07 | Long Eaton | 36-42 | Rayleigh |
Semi-finals
| Date | Team one | Score | Team two |
| 19/08 | Boston | 46-32 | Bradford |
| 22/08 | Bradford | 43-35 | Boston |
| 30/08 | Workington | 60-18 | Rayleigh |
| 18/08 | Rayleigh | 43-35 | Workington |
Final first leg
Final second leg
Boston were declared Knockout Cup Champions, winning on aggregate 89–66.
Riders' Championship
Arthur Price won the Rider's Championship, held at Wimbledon Stadium on 6 October.| Pos. | Rider | Pts | Total |
| 1 |  Riders and final averagesBarrow
|