[5] The two clubs both reached the Football League Trophy Southern Area Final, where they met for the first time in 15 years on 10 February 2004, at Layer Road for the first leg, with Southend winning 3–2.

"[12] Mark Gower picked up a yellow card for dissent after arguing with the referee, Steve Bennett, about the sending off.

[15] The match at Roots Hall during the same season was a fiery affair which saw Colchester vice-captain Alex Gilbey sent off for a foul on Southend's Ryan Leonard in the first-half.

After former U's player Anthony Wordsworth had put the Shrimpers ahead in the 82nd-minute, Adam Barrett soon doubled the home side's advantage before crowd trouble started.

[16][17][18] The man involved in the incident admitted affray and pitch invasion at Southend Magistrates Court on 24 February.

[19] The largest Essex derby victory was recorded on 10 November 2020, when Colchester beat Southend 6–1 at the Community Stadium.

Jevani Brown registered a hat-trick for the U's in the dead rubber EFL Trophy group stage match.