Some elder statesmen of the squad were allowed to depart, while the work of the club's scouting department came to fruition as they also invested in some of Europe's finest young talent.
Keeping Ben White away from the Leeds United and a shrewd free transfer from Liverpool were also highlights of the window for Albion. Scroll down and click through to see their transfer activity.
1. Jensen Weir
The 18-year-old midfielder signed from Wigan for £500,000 plus add-ons on a three-year-deal. The England under-18 is seen a bright prospect.
2. Adam Lallana
The 32-year-old signed on a free transfer from Liverpool on a three-year-deal. Undoubted quality but the main challenge will be to keep him fit and on the pitch
3. Joel Veltman
The Dutch international signed from Ajax for 900k early in the window. A solid signing who can play at centre back or on the right side
4. Zak Emmerson
The 16-year-old signed from Oldham and another one for the future. The young striker became the second youngest player in English Football League history at 15 years and 73 days when he made his debut for Oldham last season