 Newbigging returned to England after his retirement from Jardine and he had been chairman of various companies including Rentokil Group plc, Redfearn plc, NM UK Limited, Ivory and Sime plc, Maritime Transport Services Ltd, Faupel plc, Equitas Holdings Limited, Equitas Management Services Limited, Equitas Reinsurance Limited, Equitas Limited, Friends Provident (formerly Friends Provident Life Office), Thistle Hotels, Talbot Holdings Ltd, Synesis Life Ltd and Academic Partnerships Int Ltd.He had been deputy chairman of the Provincial Group plc and the Benchmark Group.He was the director of Rennies Consolidated Holdings Ltd, Sun Life & Provincial Holdings, Provincial Life Assurance Co Ltd, British Coal (formerly the National Coal Bd), CIN Management Ltd, United Meridian Corporation (USA), Market Board Corporation of Lloyd's, Merrill Lynch, Ocean Energy, Paccar, Academic Partnerships LLP Dallas USA.