The turnaround specialist said it received acceptances for its offer from shareholders who hold about 81.8% of GKN on Monday.
It expects the share cancellation to take place around May 21 after the offer has been declared wholly unconditional by April 19.
The government is now reviewing whether the deal raises security concerns, given GKN's work with the UK Ministry of Defence.
In early afternoon trading, GKN shares were 2.6% higher at 461.9p.
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