| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2024/2025 | Marine | FA Trophy | 1 | 0 | 0 | 0 | 0 | – |
| 2023/2024 | St. Johnstone | League Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2023/2024 | St. Johnstone | Scottish Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | St. Johnstone | League Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | St. Johnstone | Scottish Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | St. Johnstone | League Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | St. Johnstone | Scottish Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | St. Johnstone | League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | St. Johnstone | Scottish Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Millwall | League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Millwall | FA Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Millwall | League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Millwall | FA Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2018/2019 | Millwall | FA Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2018/2019 | Livingston | League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Carlisle United | EFL Trophy | 2 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Carlisle United | FA Cup | 5 | 0 | 0 | 0 | 0 | – |
| 2016/2017 | Millwall | EFL Trophy | 1 | 0 | 0 | 0 | 0 | – |
| Total | 22 | 0 | 0 | 0 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| - | Millwall | Carlisle United | Loan | |
| 09 Jan 2018 | Livingston | Millwall | Back from Loan | |
| - | Millwall | Lincoln City | Loan | |
| 07 Jan 2019 | Lincoln City | Millwall | Back from Loan | |
| 01 Apr 2021 | Millwall | St. Johnstone | Loan | |
| - | St. Johnstone | Millwall | Back from Loan | |
| 07 Jan 2021 | Millwall | St. Johnstone | Free Transfer | |
| 02 Sept 2024 | St. Johnstone | Raith Rovers | Loan | |
| 06 Jan 2024 | Raith Rovers | St. Johnstone | Back from Loan | |
| 09 May 2024 | St. Johnstone | Marine | Free Transfer |
J. Brown career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.