The 2002 capital investment projects were primarily devoted to expansions and upgrades to onsite wastewater treatment and management systems. Operations and maintenance costs include costs incurred by GSK manufacturing and R&D operations for operating and maintaining equipment and systems related to air pollution control, wastewater treatment and waste management.

Capital investment for EHS projects totalled £18 million in 2002 a decrease of 33% from £24 million in 2001. During 2002, GSK continued to streamline the network of manufacturing sites. This rationalisation effort and general cost control measures contributed to the decrease in capital investment.	The operations and maintenance costs reported in 2001 was revised from £43 million to £41.0 million due to better reporting. In 2002, GSK manufacturing and R&D operations spent £45.5 million which represents an 11% increase in operations and maintenance expenditure.