South Africa lead series 1-0 going into the final game
England and South Africa do battle one last time in the English summer when they do battle at Edgbaston in the third T20I on Wednesday.
South Africa go into the match leading 1-0 after the second game was unable to produce a result due to rain.
Both sides will be eager to pick up a victory that will send them to Sri Lanka for the ICC World T20 in high spirits.
With a few places still up for grabs in each starting line-up, England all-rounder Luke Wright gets another chance to press his claims at the expense of the struggling Ravi Bopara.
England leave on Thursday night for Sri Lanka, where they will play warm-up matches against Australia and Pakistan ahead of their WT20 opener against Afghanistan on September 21.
Meanwhile, South Africa coach Gary Kirsten has taken a break from his duties and will rejoin the squad in Colombo on September 16.
Kirsten confirmed: "I have made a decision to go home and to see my family, that is something that has always been part of my thinking when I took up this job."I think it will be good for the team, just to have me out of the space for a little bit and to see how the ship runs. I'm looking forward to seeing how that unfolds."