Slaughter and May is advising global healthcare company GlaxoSmithKline (GSK) on a £650m move to increase its stake in its India and Nigeria subsidiaries.

The magic circle firm is has put forward a team under corporate partners David Johnson, Simon Nicholls and Richard Smith to advise GSK.

The deal, announced at the close of November, will see GSK increase its stake in its India subsidiary from 43.3% to 75% for a proposed sum of £591m.