He played in all 46 league matches that season and scored his first senior goal for the club in the same game a diving header at the far post.
[7] After only a year at Vicarage Road Bromby returned to Sheffield United on a six-month loan with a view to a permanent deal.
[10] Bromby played the remainder of the season as defensive cover, completing thirteen appearances and one goal during his loan period.
As a child Bromby was brought up as a Leeds United fan, so the move helped fulfill a dream of playing for his boyhood heroes.
[13] Bromby received his 5th booking of the season in the same game against Stockport and missed the next match – an FA Cup 3rd round tie against Manchester United.
[citation needed] Leeds ended up pulling off a famous victory against Manchester United with Bromby's replacement Jason Crowe putting in a fantastic performance.
[15] He made only his second appearance of the season on 18 December against Queens Park Rangers when he came on as an early first-half substitute for Alex Bruce in Leeds 2–0 win over the league leaders.
After several months out of the team, Bromby regained his starting lineup spot on a regular basis displacing Alex Bruce.
[20] After missing games through injury, Bromby came back into Leeds' starting lineup replacing the suspended Patrick Kisnorbo on 20 September, coming into the side for a League Cup tie against fierce rivals Manchester United.
[22] After getting a run of games under his former Blades manager Neil Warnock, Bromby picked up a serious injury against Cardiff City on 21 April when he snapped the Patella tendon in his knee cap.
[26] Having missed the whole of the 2012–13 season due to injury, Bromby was released from his playing contract, but would carry on a role as a coach in Leeds' academy.
[27] At the start of the 2013/14 season on 25 July 2013, Bromby announced his retirement as a footballer due to his knee injury, and he officially joined the Leeds academy full-time as the club's Under 16's coach.