Paul Konchesky was their first capture of the day, signing the Liverpool left-back on loan for three months.
Konchesky was a key part of the Fulham side which reached the Europa League final last season, and followed manager Roy Hodgson to Anfield.
He looked surplus to requirements from the moment Hodgson was sacked, and his move to the City Ground has surely saved him from four months of reserve team football.
Forest also completed the signing of the USA forward Robbie Findlay. He had already agreed terms for a move, but has now been given a work permit.
Barnsley have signed the highly-rated West Ham youngster Frank Nouble, 19, on loan until the end of the season.
They have also signed 20-year-old forward Jacob Mellis on loan from Chelsea.
Preston North End completed the signing of midfielder Ian Ashbee from Hull City.
Ashbee, 34, has signed an 18-month contract to join manager Phil Brown, who he worked with at the Tigers.
The Lilywhites also turned down offers for goalkeeper Andrew Lonergan as well as defenders Billy Jones and Sean St Ledger.
The Sheffield United forward Alex Bogdanovic turned down a move to the Scottish Premier League side Hibernian. The Blades signed the defender Neill Collins from Yorkshire rivals Leeds United.
Doncaster Rovers have completed the permanent signing of midfielder Ryan Burge from Spanish lower league club Jerez Industrial CF until the end of the season, subject to international clearance.
Leeds United have completed the loan signing of Manchester City goalkeeper David Gonzalez until the end of the season. Several players also left Elland Road.
Defender Federico Bessone joined Charlton Athletic on loan, while Jason Crowe, Alan Martin and Tom Elliott were released.
The Norwich City left-back Steven Smith has moved to Aberdeen on loan.
Hull have completed the permanent signing of teenage winger Cameron Stewart for an undisclosed fee from Manchester United.
Ipswich Town have signed Andy Drury from Luton for an undisclosed fee.
Leicester City have signed Nigerian striker Daniel Uchechi on loan until the end of the season.
The Norwich City midfielder Owain Tudur Jones has extended his loan stay at Brentford until the end of the season.
Swansea City completed a late loan move for the Burnley defender David Edgar.