The 1973 British League Division Two season was the second tier of motorcycle speedway in Great Britain.
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.
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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
Second round
Quarter-finals
Semi-finals
Final first leg
Final second leg
Boston were declared Knockout Cup Champions, winning on aggregate 89âÂÂ66.
Arthur Price won the Rider's Championship, held at Wimbledon Stadium on 6 October.
Barrow
Berwick
Birmingham
Boston
Bradford
Canterbury
Chesterton
Crewe
Eastbourne
Ellesmere Port
Hull
Long Eaton
Peterborough
Rayleigh
Scunthorpe
Sunderland
Teesside
Workington