2022 •
May 30: Martin Leatherdale (Lexden & Braiswick) leaves the Conservative group to sit as an Independent before resigning several days later, triggering a by-election. •
July 28: A
by-election is held in Lexden & Braiswick. Sara Naylor is elected for the Conservatives. •
September 28: Mark Goacher (Castle) leaves the Green group to sit as an Independent. •
October 20: Independent councillors Gerard Oxford (Highwoods) and Beverly Oxford (Highwoods) resign, triggering a double by-election. •
November 24: Colchester is granted
City status, with Colchester Borough Council changing its name to Colchester City Council. •
December 8: A double by-election is held in Highwoods. Catherine Bickersteth (Labour) and Alison Jay (Liberal Democrats) are elected. •
December 15: Steph Nissen (Castle), the leader of the Green group on the council, leaves the Green Party and defects to Labour. The same day, former Green and sitting Independent, Mark Goacher (Castle), announced he would rejoin the Green group that he had left several months previously. He subsequently becomes leader of the Green group.
2023 •
March 2: Deputy Leader of the Council and Labour group leader, Adam Fox (Old Heath & The Hythe), announces his intention to resign as Labour group leader and stand down as a councillor when his term expires in May 2023. •
March 8: Chris Pearson (Berechurch) is elected as Labour group leader. •
March 27: Notice of election published. •
April 4: Candidate nominations close at 4pm. •
April 5: Statement of Persons Nominated released. •
April 17: Deadline to register to vote. •
April 18: Deadline to register for a postal vote. •
April 24: Deadline to register for a proxy vote. •
May 4: Date of election. Polling stations open between 7am and 10pm. ==Summary==