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.
21. Sheffield United
In: Adam Davies (Stoke, undisc); Charlie Goode (Sheffield United, loan). Out: Oliver Burke (Millwall, loan); Regan Slater (Hull, undisc); Lys Mousset (Salernitana, loan).
22. Stoke City
In: Taylor Harwood-Bellis (Man City); Lewis Baker (Chelsea); Phil Jagielka (Derby); Jaden Philogene-Bidace (Aston Villa); Liam Moore (Reading); Josh Maja (Bordeaux). Out: Danny Batth (Sunderland); Adam Davies (Sheff Utd); Alfie Doughty (Cardiff); Tom Ince (Reading); Sam Surridge (Nottingham Forest); Nathan Broome (AFC Wimbledon).
23. Swansea City
In: Andrew Fisher (MK Dons); Cyrus Christie (Fulham); Hannes Wolf (B Monchengladbach); Finley Burns (Man City); Nathanael Ogbeta (Shrewsbury, undisc). Out: Morgan Whittaker (Lincoln); Steven Benda (Peterborough); Liam Cullen (Lincoln); Jake Bidwell (Coventry, free); Brandon Cooper (Swindon); Liam Walsh (Hull, loan).
24. West Bromwich Albion
In: Daryl Dike (Orlando City, undisc); Andy Carroll (free). Out: Callum Morton (Peterborough, loan); Owen Wilson (Carlisle, loan); Jamie Soule (Cheltenham, loan).