Blackpool have pulled off a coup by landing Crystal Palace midfielder Stuart O'Keefe on loan until January 1.
Ipswich have signed former Leicester defender Sean St Ledger on a short-term contract until the end of December.
Cardiff have completed the signing of Fraizer Campbell from Sunderland.
The striker, who was capped by England only 11 months ago, joins the Championship leaders on a three-and-a-half-year deal for an undisclosed fee.
Campbell has been restricted to just one Premier League start this season following Steven Fletcher's arrival and would have been out of contract in the summer.
The 25-year-old, who came through the Manchester United youth system, was previously linked with Hull, where he spent a season on loan in 2008/9.