how many teams started before 1940?
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col : team name | leagues | base | year started | year ended | notable riders row 1 : aldershot shots | national league division three | tongham greyhound stadium | 1950 | 1960 |  row 2 : ashfield giants |  | saracen park, glasgow | 1949 | 1952 | ken le breton row 3 : barrow bombers | british league division two | holker street | 1972 | 1974 |  row 4 : bradford dukes | elite league | odsal stadium | 1945 | 1997 | listed in article row 5 : bristol bulldogs | national league, provincial league | knowle stadium, bristol | pre-1939 | 1954 | phil crump row 6 : carmarthen dragons |  | carmarthen showground, carmarthen | 2002 | 2004 | trevor harding, ben wilson, ben powell row 7 : cradley heath heathens | british league | dudley wood stadium | 1947 | 1996 | listed in article row 8 : crayford kestrels | british league division two/national league | crayford stadium, crayford | 1968 | 1983 |  row 9 : crewe kings | british league division two | br sports ground, crewe | 1969 | 1975 | listed in article row 10 : exeter falcons | elite league, premier league | county ground stadium, exeter | 1929 | 2005 | listed in article row 11 : hackney wick wolves | speedway national league, | hackney wick stadium | 1935 | 1939 | listed in article row 12 : hackney hawks | british league, | hackney wick stadium | 1963 | 1983 | listed in article row 13 : hastings saxons | speedway national league division three | pilot field, hastings | 1948 | 1949 |  row 14 : hull vikings | elite league, premier league | craven park | 1995 | 2005 | listed in article row 15 : leicester stadium | speedway northern league, speedway southern league | the stadium, blackbird road, leicester | 1929 | 1931 | cyril "squib" burton, syd jackson row 16 : leicester super | speedway northern league | leicester super speedway, melton road, leicester | 1930 | 1931 | fred wilkinson row 17 : leicester hounds | speedway national league division two | the stadium, blackbird road, leicester | 1937 | 1937 | wilf plant, lloyd goffe row 18 : leicester hunters | speedway national league division three, speedway provincial league | the stadium, blackbird road, leicester | 1949 | 1962 | ken mckinlay row 19 : liverpool chads | speedway national league division three, speedway national league division two, speed | stanley stadium, liverpool | late 1920s | 1960 | peter craven row 20 : london lions | speedway british league | hackney wick stadium | 1986 | 1986 | see listed in article row 21 : middlesbrough bears | northern league, speedway national league | cleveland park | 1939 | 1996 | listed in article row 22 : milton keynes knights |  | groveway greyhound stadium, milton keynes | 1978 | 1992 |  row 23 : motherwell eagles |  | the stadium, milton street, motherwell | 1951 | 1954 | listed in article row 24 : new cross rangers | speedway national league, speedway provincial league | new cross stadium | 1937 | 1963 | tom farndon row 25 : newport wasps | provincial league, british league, national league, premier league | hayley stadium | 1964 (closed 1977, reopened 1997) | 2011 |  row 26 : norwich stars | northern league, speedway national league division two, speedway national league, | the firs stadium, norwich | 1930 | 1964 |  row 27 : nottingham | southern league, national league | olympic gardens/white city stadium, nottingham | 1930 | 1938 |  row 28 : paisley lions | speedway national league | love street | 1975 | 1976 | sid and mick sheldrick, alan bridgett, mike full row 29 : rayleigh rockets | speedway provincial league, metropolitan league | rayleigh weir stadium, rayleigh, essex | 1949 | 1973 |  row 30 : rochdale hornets |  | athletic grounds, greater manchester | 1970 | 1972 | peter collins row 31 : stamford bridge pensioners | southern league, speedway national league | stamford bridge stadium, london | 1929 | 1932 | gus kuhn, wal phillips row 32 : sunderland stars | speedway national league | sunderland greyhound stadium, east boldon | 1971 | 1974 |
how many teams started before 1940?
Team name Leagues Base Year started Year ended Notable riders
Aldershot Shots National League Division Three Tongham Greyhound Stadium 1950 1960
Ashfield Giants Saracen Park, Glasgow 1949 1952 Ken Le Breton
Barrow Bombers British League Division Two Holker Street 1972 1974
Bradford Dukes Elite League Odsal Stadium 1945 1997 Listed in article
Bristol Bulldogs National League, Provincial League Knowle Stadium, Bristol pre-1939 1954 Phil Crump
Canterbury Crusaders National League, British League Division Two Kingsmead Stadium, Canterbury 1968 1987 Listed in article
Carmarthen Dragons Carmarthen Showground, Carmarthen 2002 2004 Trevor Harding, Ben Wilson, Ben Powell
Cradley Heath Heathens British League Dudley Wood Stadium 1947 1996 Listed in article
Crayford Kestrels British League Division Two/National League Crayford Stadium, Crayford 1968 1983
Crewe Kings British League Division Two BR Sports Ground, Crewe 1969 1975 Listed in article
Ellesmere Port Gunners British League Division Two/National League The Stadium, Ellesmere Port 1972 1982, 1985 (one season)
Exeter Falcons Elite League, Premier League County Ground Stadium, Exeter 1929 2005 Listed in article
Fleetwood Flyers Speedway National League Division Two Highbury Avenue Sports Stadium, Fleetwood 1948 1952
Hackney Wick Wolves Speedway National League, Hackney Wick Stadium 1935 1939 Listed in article
Hackney Hawks British League, Hackney Wick Stadium 1963 1983 Listed in article
Hackney Kestrels Speedway National League Hackney Wick Stadium 1984 1990 Listed in article
Halifax Dukes Speedway National League, Speedway Provincial League The Shay, Halifax 1949 1985 Eric Boocock
Harringay Racers Speedway National League, division 1 Harringay Stadium 1947 1954 Listed in article
Hastings Saxons Speedway National League Division Three Pilot Field, Hastings 1948 1949
Hull Vikings Elite League, Premier League Craven Park 1995 2005 Listed in article
Leicester Stadium Speedway Northern League, Speedway Southern League The Stadium, Blackbird Road, Leicester 1929 1931 Cyril "Squib" Burton, Syd Jackson
Leicester Super Speedway Northern League Leicester Super Speedway, Melton Road, Leicester 1930 1931 Fred Wilkinson
Leicester Hounds Speedway National League Division Two The Stadium, Blackbird Road, Leicester 1937 1937 Wilf Plant, Lloyd Goffe
Leicester Hunters Speedway National League Division Three, Speedway Provincial League The Stadium, Blackbird Road, Leicester 1949 1962 Ken McKinlay
Liverpool Chads Speedway National League Division Three, Speedway National League Division Two, Speedway Provincial League Stanley Stadium, Liverpool late 1920s 1960 Peter Craven
London Lions Speedway British League Hackney Wick Stadium 1986 1986 See Listed in article
Middlesbrough Bears Northern League, Speedway National League Cleveland Park 1939 1996 Listed in article
Milton Keynes Knights Groveway Greyhound Stadium, Milton Keynes 1978 1992
Motherwell Eagles The Stadium, Milton Street, Motherwell 1951 1954 Listed in article
New Cross Rangers Speedway National League, Speedway Provincial League New Cross Stadium 1937 1963 Tom Farndon
Newport Wasps Provincial League, British League, National League, Premier League Hayley Stadium 1964 (closed 1977, reopened 1997) 2011
Norwich Stars Northern League, Speedway National League Division Two, Speedway National League, Division one The Firs Stadium, Norwich 1930 1964
Nottingham Southern League, National League Olympic Gardens/White City Stadium, Nottingham 1930 1938
Oxford Cheetahs Elite League, Conference League, Premier League Oxford Stadium, Oxford 1949 2007 Listed in article
Paisley Lions Speedway National League Love Street 1975 1976 Sid and Mick Sheldrick, Alan Bridgett, Mike Fullerton, Colin Caffrey, and Stuart Mountford
Rayleigh Rockets Speedway Provincial League, Metropolitan League Rayleigh Weir Stadium, Rayleigh, Essex 1949 1973
Rochdale Hornets Athletic Grounds, Greater Manchester 1970 1972 Peter Collins
Romford Bombers Brooklands Stadium, Romford 1969 1971
Southampton Saints Speedway National League Banister Court Stadium, Southampton 1928 1963
Stamford Bridge Pensioners Southern League, Speedway National League Stamford Bridge Stadium, London 1929 1932 Gus Kuhn, Wal Phillips
Sunderland Stars Speedway National League Sunderland Greyhound Stadium, East Boldon 1971 1974
Trelawny Pitbulls Conference League Clay Country Moto Parc, St Austell 2003 2003
Trelawny Tigers Premier League Clay Country Moto Parc, St Austell 2001 2003 Chris Harris (speedway rider)
Walthamstow Wolves Speedway National League Walthamstow Stadium 1934 1951 Listed in article
Wembley Lions Southern League, Speedway National League Empire Stadium 1929 1971 Listed in article
West Ham Hammers Speedway British League, Speedway National League West Ham Stadium 1930 1971 Listed in article
White City Rebels Speedway British League White City Stadium 1976 1978 Gordon Kennett, Steve Weatherley, Trevor Geer, Marek Cieślak and Kai Niemi
Wimbledon Dons Speedway National League Wimbledon Stadium 1929 2005 Listed in article
Yarmouth Bloaters Speedway National League, Speedway Provincial League Yarmouth Stadium, Caister-on-Sea 1948 1962
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