Otto Thoresen to take on role in February 2019.: Sweden’s experience with the Premium Pension system shows how arduous dismantling of poorly constructed architectures can be Alternative risk premia strategies can be helpful for institutional investor portfolios through diversification and risk reduction The UK’s largest company pension scheme has appointed Otto Thoresen as its new chairman, with effect from mid-February. The £50.7bn (€57.2bn) BT Pension Scheme (BTPS) yesterday announced that Thoresen would succeed Paul Spencer, who was chairman of the telecom company’s defined benefit (DB) scheme for more than seven years.