With January now underway, Championship clubs have until the 31st to make new signings and bolster their squads for the second half of the season.
To find out just who is doing the business in the second tier then check out the gallery below, which will be updated on a regular basis throughout the month.
13. Luton Town
In: Jed Steer (Aston Villa, loan). Out: Dion Pereira (Bradford City, loan); Casey Pettit (Lewes, loan); Simon Sluga (Ludogorets, undisc); Glen Rea (Wigan, loan).
14. Middlesbrough
In: Aaron Connolly (Brighton, loan); Caolan Boyd-Munce (Birmingham, undisc); Folarin Balogun (Arsenal, loan); Riley McGree (Charlotte FC, undisc). Out: William Kokolo (Burton Albion); Isaac Fletcher (Hartlepool, loan); Marcus Browne (Oxford); Lewis Wing (Wycombe); Uche Ikpeazu (Cardiff, loan); Hayden Coulson (Peterborough, loan).
15. Millwall
In: Oliver Burke (Sheffield United, loan). Out: Dan Moss (Leyton Orient, loan); Jon Dadi Bodvarsson (Bolton, free); Matt Smith (Salford, free); Ben Thomson (Gillingham, free).
16. Nottingham Forest
In: Keinan Davis (Aston Villa); Steve Cook (Bournemouth); Richie Laryea (Toronto); Jonathan Panzo (Dijon, undisc); Sam Surridge (Stoke). Out: Jordan Wright (Lincoln); Carl Jenkinson (Melbourne City); Tyrese Fornah (Shrewsbury); Lyle Taylor (Birmingham); Joao Carvalho (Olympiakos).