It has agreed to buy the remainder from InfraServ Hoechst within three years.
It has also signed a £27m 10-year contract with VFB Stuttgart, which has the newest and most modern football stadium in the country.
The HSG Hoechst deal gives Compass's business and industry foodservice specialist,
Eurest, exclusive responsibility for foodservice at the Industriepark Hoechst. This has more than 40 companies on site. The deal is subject to approval by the German anti-trust commission