Clubs were busy bolstering promotion bids or steeling their squad as they fight against relegation to the fourth tier.
Some business carried out by Pompey and their rivals was undoubtedly more eye-catching than other deals.
So we’ve assembled what we believe to be the best pieces of business around the division across the winter window.
9. Dan Crowley (Willem II - Morecambe, undisclosed)
Former Arsenal and Birmingham midfielder has moved around a bit now, but has undoubted talent for the right manager to unlock. Photo: Richard Sellers
10. Macauley Bonne (QPR - Charlton, free)
Eleven goals in 16 for Ipswich at the start of last season shows the Charlton signing has the potential to be a big January signing. Photo: Ashley Allen
11. Craig MacGillivray (Charlton - Burton, undisclosed)
Pompey fans know what the keeper is capable of - with Burton certain to benefit from his presence. Photo: Justin Setterfield
12. Matt Macey (Luton - Pompey, loan)
Fans of previous clubs didn't give great endorsements, but the Luton Town loanee has been outstanding since his arrival. Photo: Jason Brown