Ferrovial originally stated that it wanted the 90% approval by 16 May, but only received 77% by this date. It granted a one-week extension and warned that it would pull out of the deal if it did not get the extra 13% of approvals by the 23 May.
The company has back-tracked on this statement and granted a further one-week deadline, as it is only 1.5% short of its target. A major shareholder for Amey said: "It's a pain in the arse getting that last 1.5%, trawling through all the shareholders to return their forms."
On Tuesday this week, Amey completed the sale of its engineering consulting subsidiary Amey Vectra to investment firm Volvere for £2m.