League Membership 1897 -
2018

ClubJoinedResignedRelegated intoPromoted fromPromoted toRelegated from
Guisborough18971939    
Guisborough1946    2015
Guisborough  2017   
Darlington1897    1998
Darlington    19992013
Darlington    2017 
Middlesbrough18971910    
Middlesbrough1920    2003
Middlesbrough    20052011
Middlesbrough    20142017
Norton18971999    
Norton   20142013 
Norton  2017   
Redcar18971902    
Redcar19041939    
Redcar1946    1997
Redcar  19981999  
Redcar    20012005
Redcar  20082012  
Redcar  2015  2017
Stockton18971999    
Thornaby1897  1999  
Thornaby  20032008  
Thornaby  20102011  
Thornaby  20132017  
Hartlepool1899    1997
Hartlepool    19992001
Hartlepool    20132014
North Ormesby19001914    
Preston19011939    
Preston19411941    
Preston1943    1997
Seaton Carew19031911    
Seaton Carew1962    1997
Seaton Carew   20131999 
Saltburn19101939    
Saltburn1946    1997
Saltburn  20072012  
Saltburn  2013   
Darlington RA19201939    
Darlington RA1943    1997
Darlington RA    20042006
Darlington RA  2006  2008
Darlington RA    20112014
Darlington RA    2016 
Normanby Hall19201920    
Normanby Hall19251939    
Normanby Hall1945    1997
Normanby Hall    20022010
Normanby Hall  20132014  
Normanby Hall  2016   
Bishop Auckland19211939    
Bishop Auckland1946    1997
Bishop Auckland  20012002  
Bishop Auckland  20112017  
Marton19251939    
Marton1947  2005  
Marton    20082015
Marton  20152016  
Billingham Synthonia19311939    
Billingham Synthonia1944  2004  
Billingham Synthonia  20052007  
Billingham Synthonia  20122015  
Billingham Synthonia  2016   
Yarm19321939    
Yarm19411941    
Yarm1943    2002
Yarm    20032012
Blackhall19351941    
Blackhall1945    1997
Blackhall  20042006  
Blackhall  2009   
Great Ayton19351939    
Great Ayton19411941    
Great Ayton1946    1997
Great Ayton   20031999 
Great Ayton    2012 
Summersons19431944    
Dormans19441945    
Mainsforth19451945    
Barnard Castle1962  2010  
Castle Eden19621994    
Marske1962    2004
Marske    20092012
Marske  20122013  
Northallerton1962    1997
Northallerton    19992000
Northallerton  2011  2016
Stokesley1962  2009  
Stokesley    20152016
Richmondshire1981  1998  
Richmondshire    2007 
Nunthorpe1982    1997
Wolviston1997  2001  
Wolviston  2002  2009
Wolviston    2017 
Bedale    20002007
Sedgefield   20112006 
Sedgefield  2013  2016
Whitby    2010 
Maltby    20122013

Current Members
ClubMember Since
Richmondshire2007
Blackhall2009
Whitby2010
Great Ayton2012
Saltburn2013
Billingham Synthonia2016
Darlington RA2016
Normanby Hall2016
Darlington2017
Guisborough2017
Norton2017
Wolviston2017

  North Ormesby CC amalgamated with Middlesbrough CC in 1916, upon the resumption of cricket after the Great War, the latter appear in place of the former.

Saltburn withdrew from the league in 1940 as it was a restricted area during World War Two.

Preston and Yarm competed in 'A' Division in season 1940 & 1942.

West Hartlepool changed their name to Hartlepool in 1968.

Promotion and Relegation also started from the 1998 season.