Resignations at the top for the UK retirement income business and the Swiss firm. : Cook will stay at Just Group until 30 June 2019 through the transition period, but leaves the company’s board with immediate effect. In the meantime, David Richardson, currently group deputy chief executive and interim chief financial officer, will take on the role of interim chief executive, subject to regulatory approval. Similarly, UBS’ head of UK domestic business, Nick Tucker, is leaving the Swiss firm after nine years in the job.