| Event | Meeting | Venue | Date | Shaun Burrows | Alexander Thomson | Ross Paterson | Toby Markham | Dylan Harris | Leo Johnson | Jonathan Lineker | Craig Revie | Seth Balson |
| 400 | Sainsbury's School Games | Sportcity | 4 Sep 15 | 55.72 | 1rA | | | 59.27 | 3rA | | | | | | | | | | | | |
| 400 | SDS National Junior Championships | Grangemouth | 1 Jun 16 | | | 57.99 | 1r1 | 58.18 | 2r1 | | | | | | | | | | | | |
| 400 | Livingston Open Meeting | Livingston | 19 Apr 17 | | | 56.97 | 6r2 | 56.17 | 5r2 | | | | | | | | | | | | |
| 400 | Grangemouth Graded Open | Grangemouth | 3 May 17 | | | 56.36 | 4r2 | 56.91 | 5r2 | | | | | | | | | | | | |
| 400 | Livingston Open Meeting | Livingston | 19 Jul 17 | | | 55.85 | 3r2 | 56.13 | 4r2 | | | | | | | | | | | | |
| 400 | Northern Athletics U20 / Senior Championships | Sportcity | 1 Jun 19 | | | 57.69 | 2rP | | | | | 56.97 | 1rP | | | | | | | | |
| 400 | CAU Inter-County Championships (Inc England Athletics Senior Championships) | Sportcity | 27 Jul 19 | 54.65 | 3rP2 | | | | | | | 57.48 | 5rP2 | | | | | | | | |
| 400 | Coventry Spring Meet | Coventry | 24 Apr 21 | 55.93 | 3r2 | 56.11 | 4r2 | 56.13 | 5r2 | 62.53 | 6r2 | | | | | | | | | | |
| 400 | European Para Championships | Bydgoszcz, POL | 2 Jun 21 | 53.02 | 2rT38 | 54.46 | 3rT38 | 55.60 | 4rT38 | | | | | | | | | | | | |
| 400 | The Müller British Grand Prix | Gateshead | 13 Jul 21 | | | 54.53 | 5rP | 54.77 | 6rP | | | 57.09 | 7rP | | | | | | | | |
| 400 | England Athletics Senior Championships, including Disability Championships | Bedford | 17 Jul 21 | 54.70 | 4rP1 | 55.08 | 5rP1 | | | | | | | | | | | | | | |
| 400 | Coventry Spring Meet | Coventry | 23 Apr 22 | 57.55 | 5 | | | | | 61.59 | 2 | | | | | | | | | | |
| 400 | England Athletics Senior Championships | Bedford | 30 Jul 22 | | | | | | | 59.68 | 6rP | 57.01 | 5rP | | | | | | | | |
| 400 | Newham & Essex Beagles Outdoor Series | Stratford (CT) | 14 Aug 22 | | | | | | | 58.53 | 5r7 | 57.10 | 4r7 | | | | | | | | |
| 400 | Loughborough International | Loughborough | 21 May 23 | | | 55.80 | 4rP | | | 58.97 | 7rP | | | | | | | | | | |
| 400 | England Athletics Senior & Disability Championships and UK Athletics Combined Events | Chelmsford | 22 Jul 23 | | | | | | | 58.36 | 2rP1 | 56.63 | 1rP1 | | | | | | | | |
| 400 | 4J Studios scottishathletics Combined Events Championships, Masters Championships & Para Success | Dundee | 13 Jul 24 | | | 54.64 | 2rM/P1 | 55.47 | 3rM/P1 | | | | | | | | | | | | |
| 400 | England Athletics U20 & Senior Championships (inc.U23), Senior Para Championships (U20+) inc. CAU Championships | Birmingham | 21 Jul 24 | 53.95 | 2 | 54.88 | 3 | | | | | | | | | | | | | | |
| 400 | CP Sport National Athletics Championships | Coventry | 8 Sep 24 | | | | | | | 59.68 | 1 | | | | | 83.74 | 5 | | | 99.25 | 6 |
| 400 | Stratford Speed | Stratford (CT) | 22 Jun 25 | | | | | | | 63.22 | 4r7 | 60.69 | 3r7 | 67.24 | 5r7 | | | | | | |