Allen & Overy and Linklaters picked up the lion’s share of more than £10m in legal fees from their roles on the proposed merger of insurance giants Aviva and Friends Life, documents released under the UK Takeover Code show.

Friends Life, who turned to Linklaters as lead advisers on the deal, paid out a total of £6m to its legal advisers, while Aviva, who chiefly instructed Allen & Overy (A&O), spent a total of £4.4m on legal costs.