Eastern Counties 4 was an English level 12 Rugby Union league that was divided into two regional divisions - north and south - with teams from Cambridgeshire, Norfolk, Suffolk and Essex taking part. Promoted teams used to move up to the relevant division in Eastern Counties 3 and relegation was to Eastern Counties 5 until that division was cancelled at the end of the 1996–97 season. The league was originally abolished in 1999–00 due to East Counties restructuring and teams moved up to higher divisions, only to be reinstated in 2014-15 due to further league restructuring that allowed more 2nd and 3rd teams to take part. It was abolished again at the end of the 2016–17 season.
Original teams
When league rugby began in 1987 this division contained the following teams:
The creation of National 5 South meant that Eastern Counties 4 dropped from a tier 11 league to a tier 12 league for the years that National 5 South was active. Promotion and relegation continued to Eastern Counties 3 and Eastern Counties 5 respectively.
The cancellation of National 5 South at the end of the 1995–96 season meant that Eastern Counties 4 reverted to being a tier 11 league. Promotion continued to Eastern Counties 3, while the cancellation of Eastern Counties 5 at the end of the 1996–97 meant there would be no relegation.
Ahead of the 1997–98 season Eastern Counties 4 was split into two regional divisions - north and south - with both divisions remaining as tier 11 leagues. Promotion continued to Eastern Counties 3 - now also regionalised into north and south divisions - while the cancellation of Eastern Counties 5 at the end of the 1996–97 season meant there was no relegation. At the end of the 1999–00 season Eastern Counties 4 was cancelled and the majority of teams transferred into Eastern Counties 3.
After an absence of thirteen years, Eastern Counties 4 was re-introduced as a tier 12 league ahead of the 2014–15 season, split into two regional divisions - north and south. Promotion was to one of the regional divisions in Eastern Counties 3 - north, south or west - and there was no relegation. Eastern Counties 4 was cancelled for the second time at the end of the 2016–17 season.
↑No relegation as league was to increase from 11 to 13 teams for the following season.
↑No relegation due to the cancellation of Eastern Counties 5 at the end of the season.
↑This would be the last season for East Counties 4 North and South. The majority of teams from this division would move up into East Counties 3 North for the following season.
↑This would be the last season for East Counties 4 North and South. The majority of teams from this division (asides from champions Witham) would move up into East Counties 3 South for the following season.
↑As a club Hadleigh has won 2 titles - 1 by the 1st XV, 1 by the 2nd XV.