text: Initially IOP attempted to sell the company as a complete unit but when this was unsuccessful they decided to sell the Fulmer companies at Stoke Poges and Slough, and the Yarsley operation at Redhill as separate entities.
  In 1989 exploratory talks with an American testing and consultancy company were held regarding a merger with Yarsley but no agreement could be reached. An approach was then made to the UK subsidiary of the Swiss company Societe Generale de Surveillance S.A. (SGS), who were particularly interested in strengthening their activities in quality assurance consultancy and certification. Agreement was soon reached for them to purchase Yarsley, and the sale took place on November 30, 1990. The Fulmer activities at Stoke Poges were merged with
  BNF Metals Technology Centre at Wantage Oxfordshire, and the manufacturing unit at Slough was acquired by Sintek of Germany.