The Eastern Counties Rugby Union was founded in 1890 and originally organised rugby union in Essex, Suffolk and Norfolk. Cambridgeshire became part of the ECRU in 1952 and the Essex Rugby Football Union eventually split off from ECRU to form its own body in 2003.[1][2]
There are currently 53 clubs affiliated with the Eastern Counties RU, most of which have teams at both senior and junior level. Each club is in turn affiliated with a sub-county rugby football union, either Cambridgeshire, Norfolk or Suffolk, and are mostly based in those three counties except several cases where they are instead based in Essex or Hertfordshire.
There is no Eastern Counties cup competition. Instead, each sub-county organizes its own cup competitions for local teams.
Cambridgeshire
Cambridgeshire County Cup - premier cup competition in Cambridgeshire which features clubs from tiers 6-9 of the English rugby union system as well as invitee development teams from the Zoo Leagues
Cambridgeshire Intermediate Cup - clubs from tiers 10–11
Cambridgeshire Junior Cup - clubs from tiers 11
[6]
Norfolk
Norfolk Senior Cup - premier cup competition in Norfolk which features clubs from tiers 6-7 of the English rugby union system
Norfolk Cup - clubs at tiers 8–10
Norfolk Bowl - 2nd teams only
[7]
Suffolk
Suffolk Chadacre Cup - premier cup competition in Suffolk which features clubs from tiers 8-9 of the English rugby union system
Suffolk Plate - clubs from tiers 10–11
[8][9]
Notes
^Clacton are based in Essex but are joint members of both Essex RFU and Suffolk RFU.
^Colchester are based in Essex but are members of the Suffolk RFU.
^Mersea Island are based in Essex but are members of the Suffolk RFU.
^Saffron Walden are based in Hertfordshire but are members of the Cambridgeshire RFU.