Samba Diakite (Nancy, loan); Taye Taiwo (AC Milan, loan); Federico Macheda (Man Utd, loan); Nedum Onuoha (Man City, £2.5m); Djibril Cisse (Lazio, £4.5m); Bobby Zamora (Fulham, £6m).
With surviving relegation top of his agenda since taking over from Neil Warnock, Mark Hughes was under pressure to bring in players who could guide the club to safety.
Former Liverpool striker Djibril Cisse is the marquee signing, but the additions of defensive pair Taye Taiwo and Nedum Onuoha are the most significant given Rangers' leaky back-four.
Matthew Connolly (Reading, loan); Petter Vaagen Moen (released); Martin Rowlands (released); Bradley Orr (Blackburn, undisc).
In order to release funds in the final days of the transfer window, QPR let go four members of their promotion winning squad, with Matthew Connolly, who joined Reading, and Bradley Orr, who moved to Blackburn Rovers, finding clubs on deadline day.
Adel Taarabt went back on his decision to leave the club upon the appointment of Hughes.