US heavyweights Kirkland & Ellis and Wachtell Lipton Rosen & Katz are among the law firms to have taken roles on Burger King’s $11bn (£6.6bn) acquisition of coffee-and-doughnut chain Tim Hortons.

The deal, announced yesterday (26 August), will create an $18bn (£10.9bn) company and sees Burger King relocate its headquarters to Canada – the latest example of a high-profile US company pushing ahead with a corporate tax inversion.