Carl Pettersson fired the round of the day with a 6-under 66 to climb into a tie for third. He completed 54 holes at 6-under-par 210 and is tied with Luke Donald (71), overnight leader Nick Dougherty (74) and Steve Webster (70).
After mixing 11 birdies, six bogies and a double-bogey over his first two rounds, Scott had a bogey-free round Saturday. He parred the first three holes for the third straight round. Scott then rolled home back-to-back birdies from the fourth to move to 5-under for the tournament.
Scott, a three-time winner on the European Tour, converted five straight pars around the turn before birdieing the par-3 11th. He secured his share of the lead with consecutive birdies from the 16th.
'My form recently hasn't been good and it's the first time in my career that a period like that has lasted for quite a while,' said Scott, who has made just six of 11 cuts on the European Tour this season. 'I've been putting really poorly but I've spoken about it with Butch (Harmon) and I think I'm starting to come back to the form I would like. I played really solid today and didn't drop any shots.'
Lafeber entered the round three shots out of the lead at Barseback Golf & Country Club. He birdied the second hole for the second straight day but struggled to a bogey at the fourth.
He reeled off seven consecutive pars before making his move. The 28-year-old then ran in back-to-back birdies from the 12th to get to minus-7.
Lafeber, who is in search of his first European Tour title, was able to join Scott in the lead as he birdied the last for the second straight round.
Pettersson notched three birdies on the front side before a bogey and four more birdies on the back helped him climb from a share of 35th into a tie for third.
Dougherty struggled throughout the day. He birdied the opening hole, but struggled to three straight bogeys to fall out of the lead. He slid to 3-over for his round with a bogey at the seventh.
He tried to recover as he drained back-to-back birdies from the seventh, but stumbled to a bogey at the 17th.
Robert-Jan Derksen, Peter Hedblom, Mark James, Richard S. Johnson, Robert Karlsson, Soren Kjeldsen and Gary Orr share seventh place at 5-under-par 211.