Deutsche Telekom is considering a possible takeover of BT, in which it already holds a 12% share.
According to The Telegraph, BT has intensified work with advisers from Robey Warshaw and Goldman Sachs on its defence in recent months amid strengthening rumours that its German counterpart is preparing an approach.
Broadband TV News notes that Altice is currently the largest shareholder in BT, having raised its stake from 18% to 24.5% in May this year.