In February 2015 Tabb won the "Dan Bartram Player of the Month" award, which included pre-match a trophy presentation at Portman Road.

Born in England to Irish parents, he is a dual citizen who has represented the Republic of Ireland at international level and won ten caps for the under-21 side between 2004 and 2006.

[citation needed] Tabb was born in Tooting, Greater London and was released from Crystal Palace as a junior at the age of 16, after being deemed, at 5'5", too short to play professional football.

Tabb travelled to Crawley Town (then playing in the Southern League Premier Division) in February 2004 intent on signing loan forms, but ultimately did not agree to terms after suffering torn ligaments in training with Brentford a few days later.

"[17] He made his Reading debut as a second-half substitute in the 1–0 defeat to Nottingham Forest on 28 February 2009 but only featured sporadically in his first few months at the club.

[20] He made his first Premier League appearance in Reading's 2–2 draw away at Swansea City on 6 October 2012 and earned plaudits for his no-nonsense performances in subsequent games.

[21][22] Despite featuring regularly during the first half of the season, Tabb was told in January he was free to leave the club during the transfer window after Reading signed Daniel Carriço and Hope Akpan.

[25] He made his debut two days later in a 0–0 draw with Peterborough United[26] and was selected in the Championship Team of the Week after his performance in the 1–0 win over Bolton Wanderers the following weekend.

[27] After two impressive performances for Ipswich, Tabb expressed a hope that his good form could earn him a new contract at Reading, despite being surplus to requirements under the previous management.

[citation needed] Despite being born in England, Tabb also holds an Irish passport and has represented the Republic of Ireland at international level.

[42] On 13 March 2020, Tabb was interviewed during ITV Racing's coverage of the Cheltenham Festival when leading up one of Philip Hobbs' horses where he now works as a stable lad.