Head to Head
| England U23 Development League | 2021/02/09 13:00 | Cardiff U23 v Colchester U23 | W | 4-1 |
| England U23 Development League | 2020/11/28 11:00 | Colchester U23 v Cardiff U23 | L | 2-0 |
| England U23 Development League | 2020/01/13 13:00 | Cardiff U23 v Colchester U23 | W | 2-1 |
| England U23 Development League | 2019/10/21 12:00 | Colchester U23 v Cardiff U23 | W | 0-2 |
| England U23 Development League | 2019/01/21 13:01 | Colchester U23 v Cardiff U23 | L | 2-1 |
| England U23 Development League | 2018/04/12 13:00 | Cardiff U23 v Colchester U23 | L | 0-1 |
| England U23 Development League | 2018/03/29 12:00 | Colchester U23 v Cardiff U23 | W | 0-3 |
| England U23 Development League | 2017/04/10 12:00 | Colchester U23 v Cardiff U23 | D | 1-1 |
Home History
| England U23 Development League | 2021/11/23 13:30 | QPR U23 v Cardiff U23 | W | 1-3 |
| England U23 Development League | 2021/11/01 19:00 | Swansea U23 v Cardiff U23 | W | 1-3 |
| England U23 Development League | 2021/10/26 11:00 | Ipswich U23 v Cardiff U23 | W | 1-2 |
| England U23 Development League | 2021/10/19 12:00 | Cardiff U23 v Charlton U23 | W | 4-1 |
| England U23 Development League | 2021/09/27 12:00 | Cardiff U23 v Millwall U23 | W | 2-0 |
| England U23 Development League | 2021/09/21 12:00 | Cardiff U23 v Sheff Utd U23 | W | 2-0 |
| England U23 Development League | 2021/09/10 10:00 | Sheff Wed U23 v Cardiff U23 | W | 0-3 |
| England U23 Development League | 2021/08/29 14:00 | Cardiff U23 v Peterborough U23 | W | 3-1 |
Away History
| England U23 Premier League Cup | 2021/11/16 19:00 | Colchester U23 v Fulham U23 | D | 0-0 |
| England U23 Development League | 2021/11/08 19:00 | Colchester U23 v Millwall U23 | W | 2-0 |
| England U23 Development League | 2021/11/01 19:00 | Ipswich U23 v Colchester U23 | L | 2-0 |
| England U23 Development League | 2021/10/19 12:00 | QPR U23 v Colchester U23 | W | 0-2 |
| England U23 Development League | 2021/10/12 12:00 | Colchester U23 v Wigan U23 | L | 0-1 |
| England U23 Premier League Cup | 2021/10/08 18:00 | Colchester U23 v Southend U23 | D | 1-1 |
| England U23 Development League | 2021/10/04 13:00 | Charlton U23 v Colchester U23 | D | 2-2 |
| England U23 Development League | 2021/09/28 12:00 | Colchester U23 v Swansea U23 | W | 3-1 |